Red Hat Logging
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Recent Red Hat Logging Security Advisories
| Advisory | Title | Published |
|---|---|---|
| RHSA-2026:50843 | (RHSA-2026:50843) Logging for Red Hat OpenShift - 6.0.16 | August 5, 2026 |
| RHSA-2026:47952 | (RHSA-2026:47952) Logging for Red Hat OpenShift - 6.2.12 | July 29, 2026 |
| RHSA-2026:34364 | (RHSA-2026:34364) Logging for Red Hat OpenShift - 6.4.6 | July 1, 2026 |
| RHSA-2026:26585 | (RHSA-2026:26585) Logging for Red Hat OpenShift - 6.0.15 | June 17, 2026 |
| RHSA-2026:22862 | (RHSA-2026:22862) Logging for Red Hat OpenShift - 6.4.5 | June 3, 2026 |
| RHSA-2026:16354 | (RHSA-2026:16354) Logging for Red Hat OpenShift - 6.5.1 | May 12, 2026 |
| RHSA-2026:11800 | (RHSA-2026:11800) Logging for Red Hat OpenShift - 6.2.10 | April 29, 2026 |
| RHSA-2026:7052 | (RHSA-2026:7052) Logging for Red Hat OpenShift - 6.0.14 | April 8, 2026 |
| RHSA-2026:4939 | (RHSA-2026:4939) Logging for Red Hat OpenShift - 6.3.4 | March 18, 2026 |
| RHSA-2026:4500 | (RHSA-2026:4500) Logging for Red Hat OpenShift - 6.2.9 | March 12, 2026 |
By the Year
In 2026 there have been 74 vulnerabilities in Red Hat Logging with an average score of 7.8 out of ten. Last year, in 2025 Logging had 2 security vulnerabilities published. That is, 72 more vulnerabilities have already been reported in 2026 as compared to last year. However, the average CVE base score of the vulnerabilities in 2026 is greater by 1.39.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 74 | 7.84 |
| 2025 | 2 | 6.45 |
| 2024 | 10 | 6.89 |
| 2023 | 5 | 6.56 |
It may take a day or so for new Logging vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Red Hat Logging Security Vulnerabilities
Konnectivity Proxy-Server: Unauthenticated Agent via Missing CA Cert
CVE-2026-16242
9.4 - Critical
- July 20, 2026
A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.
Missing Authentication for Critical Function
OpenShift Cluster Logging Operator: SA Token Escalation via Missing Auth
CVE-2026-10609
6.8 - Medium
- June 23, 2026
A missing authorization flaw was found in the OpenShift Cluster Logging Operator. The operator creates and forwards ServiceAccount tokens to output destinations without verifying that the ClusterLogForwarder creator has permission to use those credentials, allowing a delegated editor to exfiltrate SA tokens and escalate privileges.
AuthZ
Go crypto/x509 VerifyHostname DNS SAN quadratic overhead
CVE-2026-27145
7.5 - High
- June 02, 2026
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.
Unchecked Input for Loop Condition
golang.org/x/net/idna pre-0.55.0 IDN bug allows silent ASCII/Unicode mix
CVE-2026-39821
8.2 - High
- May 22, 2026
The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode("xn--example-.com") incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject "example.com" but permit "xn--example-.com". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name "example.com".
Improper Validation of Unsafe Equivalence in Input
Auth Bypass in golang.org/x/crypto/ssh <0.52.0
CVE-2026-46595
7.1 - High
- May 22, 2026
Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.
AuthZ
KnownHosts Revocation Check Failure in golang.org/x/crypto/ssh<0.52.0
CVE-2026-42508
7.4 - High
- May 22, 2026
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
Improper Certificate Validation
go/crypto/ssh CPU DoS via oversized RSA/DSA keys before 0.52
CVE-2026-39829
7.5 - High
- May 22, 2026
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.
Improper Validation of Specified Quantity in Input
SSH Auth PartialSuccessError Permissions Discarded (golang.org/x/crypto/ssh <0.52.0)
CVE-2026-39828
8.8 - High
- May 22, 2026
When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.
Improper Preservation of Permissions
Resource Leak in golang.org/x/crypto/ssh <0.52.0 via Global Request Buffers
CVE-2026-39830
7.5 - High
- May 22, 2026
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.
Missing Release of Resource after Effective Lifetime
golang.org/x/crypto/ssh: CertChecker nil callback panic <0.52.0
CVE-2026-39835
7.5 - High
- May 22, 2026
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
NULL Pointer Dereference
SSH Agent Constraint-Serialization Bug (v<0.52.0)
CVE-2026-39832
8.7 - High
- May 22, 2026
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
Improper Preservation of Permissions
Go net/mail 1.25.x-1.26.3: ParseAddress/Date CPU/Memory Exhaustion
CVE-2026-39820
7.5 - High
- May 07, 2026
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
Unchecked Input for Loop Condition
Double-free CVE-2026-33811 via LookupCNAME in Go net (<=1.26.2)
CVE-2026-33811
7.5 - High
- May 07, 2026
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
1341
DoS via consumePhrase in Go net/mail RFC 5322 parsing <1.26.3
CVE-2026-42499
7.5 - High
- May 07, 2026
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
Creation of Immutable Text Using String Concatenation
Go HTTP/2 Infinity Loop from SETTINGS_MAX_FRAME_SIZE=0
CVE-2026-33814
7.5 - High
- May 07, 2026
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Unchecked Input for Loop Condition
Heap Exhaustion via Unvalidated Len in Prometheus Remote Read (<3.5.3/3.11.3)
CVE-2026-42154
7.5 - High
- May 04, 2026
Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.
Resource Exhaustion
Prometheus OAuth Client Secret Exposure via /-/config (pre 3.5.3/3.11.3)
CVE-2026-42151
7.5 - High
- May 04, 2026
Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the client_secret field in the Azure AD remote write OAuth configuration (storage/remote/azuread) was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving the configuration via the /-/config HTTP API endpoint. Because the field was a plain string, the Azure OAuth client secret was exposed in plaintext to any user or process with access to that endpoint. This issue has been patched in versions 3.5.3 and 3.11.3.
Information Disclosure
Grafana Tempo Large Limit Memory Allocation DoS
CVE-2026-21728
7.5 - High
- April 24, 2026
Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy. Mitigation can be done by setting max_result_limit in the search config, e.g. to 262144 (2^18). Alternatively, automatically restart the service.
Resource Exhaustion
Go lib spdystream <0.5.1 OOM via SPDY frame parsing
CVE-2026-35469
6.5 - Medium
- April 16, 2026
spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1.
Allocation of Resources Without Limits or Throttling
Axios <1.15.0 Prototype Pollution RCE via Gadget Attack
CVE-2026-40175
8.1 - High
- April 10, 2026
Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This vulnerability is fixed in 1.15.0 and 0.3.1.
HTTP Response Splitting
Go crypto/x509 Intermediates DoS (<=1.26.2)
CVE-2026-32280
7.5 - High
- April 08, 2026
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
Allocation of Resources Without Limits or Throttling
Go crypto/tls TLS 1.3 KeyUpdate deadlock DoS (1.25.9 & <1.26.2)
CVE-2026-32283
7.5 - High
- April 08, 2026
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
Multiple Locks of a Critical Resource
Go 1.26.x crypto/x509 DNS Constraint Case Sensitivity
CVE-2026-33810
8.8 - High
- April 08, 2026
When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Improper Validation of Unsafe Equivalence in Input
opentelemetry-go 1.36-1.40 DoS via multi-value baggage header
CVE-2026-29181
7.5 - High
- April 07, 2026
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.
Allocation of Resources Without Limits or Throttling
GoJOSE JWE Decrypt Panic (DoS) Fixed v4.1.4/3.0.5
CVE-2026-34986
7.5 - High
- April 06, 2026
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.4 and 3.0.5, decrypting a JSON Web Encryption (JWE) object will panic if the alg field indicates a key wrapping algorithm (one ending in KW, with the exception of A128GCMKW, A192GCMKW, and A256GCMKW) and the encrypted_key field is empty. The panic happens when cipher.KeyUnwrap() in key_wrap.go attempts to allocate a slice with a zero or negative length based on the length of the encrypted_key. This code path is reachable from ParseEncrypted() / ParseEncryptedJSON() / ParseEncryptedCompact() followed by Decrypt() on the resulting object. Note that the parse functions take a list of accepted key algorithms. If the accepted key algorithms do not include any key wrapping algorithms, parsing will fail and the application will be unaffected. This panic is also reachable by calling cipher.KeyUnwrap() directly with any ciphertext parameter less than 16 bytes long, but calling this function directly is less common. Panics can lead to denial of service. This vulnerability is fixed in 4.1.4 and 3.0.5.
Uncaught Exception
Rack 3.0.01-3.1.20/3.2.0-3.2.5 DOS via Escaped Multipart Parameters
CVE-2026-34827
7.5 - High
- April 02, 2026
Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parser#handle_mime_head parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated String#index searches combined with String#slice! prefix deletion. For escape-heavy quoted values, this causes super-linear processing. An unauthenticated attacker can send a crafted multipart/form-data request containing many parts with long backslash-escaped parameter values to trigger excessive CPU usage during multipart parsing. This results in a denial of service condition in Rack applications that accept multipart form data. This issue has been patched in versions 3.1.21 and 3.2.6.
Inefficient Algorithmic Complexity
Rack Multipart::Parser Unbounded Disk Usage DOS in <2.2.23, <3.1.21, <3.2.6
CVE-2026-34829
7.5 - High
- April 02, 2026
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Multipart::Parser only wraps the request body in a BoundedIO when CONTENT_LENGTH is present. When a multipart/form-data request is sent without a Content-Length header, such as with HTTP chunked transfer encoding, multipart parsing continues until end-of-stream with no total size limit. For file parts, the uploaded body is written directly to a temporary file on disk rather than being constrained by the buffered in-memory upload limit. An unauthenticated attacker can therefore stream an arbitrarily large multipart file upload and consume unbounded disk space. This results in a denial of service condition for Rack applications that accept multipart form data. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Resource Exhaustion
Lodash <4.18.0 _.template key-names RCE
CVE-2026-4800
8.1 - High
- March 31, 2026
Impact: The fix for CVE-2021-23337 (https://github.com/advisories/GHSA-35jh-r3h4-6jhm) added validation for the variable option in _.template but did not apply the same validation to options.imports key names. Both paths flow into the same Function() constructor sink. When an application passes untrusted input as options.imports key names, an attacker can inject default-parameter expressions that execute arbitrary code at template compilation time. Additionally, _.template uses assignInWith to merge imports, which enumerates inherited properties via for..in. If Object.prototype has been polluted by any other vector, the polluted keys are copied into the imports object and passed to Function(). Patches: Users should upgrade to version 4.18.0. Workarounds: Do not pass untrusted input as key names in options.imports. Only use developer-controlled, static key names.
Code Injection
Handlebars.js <=4.7.8 Command Injection via CLI Precompiler
CVE-2026-33941
8.2 - High
- March 27, 2026
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the Handlebars CLI precompiler (`bin/handlebars` / `lib/precompiler.js`) concatenates user-controlled strings template file names and several CLI options directly into the JavaScript it emits, without any escaping or sanitization. An attacker who can influence template filenames or CLI arguments can inject arbitrary JavaScript that executes when the generated bundle is loaded in Node.js or a browser. Version 4.7.9 fixes the issue. Some workarounds are available. First, validate all CLI inputs before invoking the precompiler. Reject filenames and option values that contain characters with JavaScript string-escaping significance (`"`, `'`, `;`, etc.). Second, use a fixed, trusted namespace string passed via a configuration file rather than command-line arguments in automated pipelines. Third, run the precompiler in a sandboxed environment (container with no write access to sensitive paths) to limit the impact of successful exploitation. Fourth, audit template filenames in any repository or package that is consumed by an automated build pipeline.
XSS
Arbitrary Code Execution via Dynamic Partial Bypass in Handlebars v4.0.0-4.7.8
CVE-2026-33940
8.1 - High
- March 27, 2026
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, a crafted object placed in the template context can bypass all conditional guards in `resolvePartial()` and cause `invokePartial()` to return `undefined`. The Handlebars runtime then treats the unresolved partial as a source that needs to be compiled, passing the crafted object to `env.compile()`. Because the object is a valid Handlebars AST containing injected code, the generated JavaScript executes arbitrary commands on the server. The attack requires the adversary to control a value that can be returned by a dynamic partial lookup. Version 4.7.9 fixes the issue. Some workarounds are available. First, use the runtime-only build (`require('handlebars/runtime')`). Without `compile()`, the fallback compilation path in `invokePartial` is unreachable. Second, sanitize context data before rendering: Ensure no value in the context is a non-primitive object that could be passed to a dynamic partial. Third, avoid dynamic partial lookups (`{{> (lookup ...)}}`) when context data is user-controlled.
Code Injection
Handlebars.js 4.0.0-4.7.8 DDOS via unregistered decorator crash
CVE-2026-33939
7.5 - High
- March 27, 2026
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, when a Handlebars template contains decorator syntax referencing an unregistered decorator (e.g. `{{*n}}`), the compiled template calls `lookupProperty(decorators, "n")`, which returns `undefined`. The runtime then immediately invokes the result as a function, causing an unhandled `TypeError: ... is not a function` that crashes the Node.js process. Any application that compiles user-supplied templates without wrapping the call in a `try/catch` is vulnerable to a single-request Denial of Service. Version 4.7.9 fixes the issue. Some workarounds are available. Wrap compilation and rendering in `try/catch`. Validate template input before passing it to `compile()`; reject templates containing decorator syntax (`{{*...}}`) if decorators are not used in your application. Use the pre-compilation workflow; compile templates at build time and serve only pre-compiled templates; do not call `compile()` at request time.
Improper Check for Unusual or Exceptional Conditions
Arbitrary JS Exec via @partial-block 4.0.04.7.8 (fixed 4.7.9)
CVE-2026-33938
8.1 - High
- March 27, 2026
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the `@partial-block` special variable is stored in the template data context and is reachable and mutable from within a template via helpers that accept arbitrary objects. When a helper overwrites `@partial-block` with a crafted Handlebars AST, a subsequent invocation of `{{> @partial-block}}` compiles and executes that AST, enabling arbitrary JavaScript execution on the server. Version 4.7.9 fixes the issue. Some workarounds are available. First, use the runtime-only build (`require('handlebars/runtime')`). The `compile()` method is absent, eliminating the vulnerable fallback path. Second, audit registered helpers for any that write arbitrary values to context objects. Helpers should treat context data as read-only. Third, avoid registering helpers from third-party packages (such as `handlebars-helpers`) in contexts where templates or context data can be influenced by untrusted input.
Code Injection
Remote Code Execution via Handlebars.compile in 4.0.04.7.8
CVE-2026-33937
9.8 - Critical
- March 27, 2026
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, `Handlebars.compile()` accepts a pre-parsed AST object in addition to a template string. The `value` field of a `NumberLiteral` AST node is emitted directly into the generated JavaScript without quoting or sanitization. An attacker who can supply a crafted AST to `compile()` can therefore inject and execute arbitrary JavaScript, leading to Remote Code Execution on the server. Version 4.7.9 fixes the issue. Some workarounds are available. Validate input type before calling `Handlebars.compile()`; ensure the argument is always a `string`, never a plain object or JSON-deserialized value. Use the Handlebars runtime-only build (`handlebars/runtime`) on the server if templates are pre-compiled at build time; `compile()` will be unavailable.
Object Type Confusion
node-forge < 1.4.0: VerifyCertificateChain Allows Non-CA Certs
CVE-2026-33896
7.4 - High
- March 27, 2026
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, `pki.verifyCertificateChain()` does not enforce RFC 5280 basicConstraints requirements when an intermediate certificate lacks both the `basicConstraints` and `keyUsage` extensions. This allows any leaf certificate (without these extensions) to act as a CA and sign other certificates, which node-forge will accept as valid. Version 1.4.0 patches the issue.
Improper Certificate Validation
node-forge <=1.3 Ed25519 Sig Verify Malleability flaw
CVE-2026-33895
7.5 - High
- March 27, 2026
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, Ed25519 signature verification accepts forged non-canonical signatures where the scalar S is not reduced modulo the group order (`S >= L`). A valid signature and its `S + L` variant both verify in forge, while Node.js `crypto.verify` (OpenSSL-backed) rejects the `S + L` variant, as defined by the specification. This class of signature malleability has been exploited in practice to bypass authentication and authorization logic (see CVE-2026-25793, CVE-2022-35961). Applications relying on signature uniqueness (i.e., dedup by signature bytes, replay tracking, signed-object canonicalization checks) may be bypassed. Version 1.4.0 patches the issue.
Improper Verification of Cryptographic Signature
Forge (node-forge) RSASSA PKCS#1 v1.5 forgery e=3 v<1.4
CVE-2026-33894
7.5 - High
- March 27, 2026
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). Attackers can forge signatures by stuffing garbage bytes within the ASN structure in order to construct a signature that passes verification, enabling Bleichenbacher style forgery. This issue is similar to CVE-2022-24771, but adds bytes in an addition field within the ASN structure, rather than outside of it. Additionally, forge does not validate that signatures include a minimum of 8 bytes of padding as defined by the specification, providing attackers additional space to construct Bleichenbacher forgeries. Version 1.4.0 patches the issue.
Improper Verification of Cryptographic Signature
node-forge <1.4.0: DoS via Infinite Loop in modInverse()
CVE-2026-33891
7.5 - High
- March 27, 2026
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, a Denial of Service (DoS) vulnerability exists in the node-forge library due to an infinite loop in the BigInteger.modInverse() function (inherited from the bundled jsbn library). When modInverse() is called with a zero value as input, the internal Extended Euclidean Algorithm enters an unreachable exit condition, causing the process to hang indefinitely and consume 100% CPU. Version 1.4.0 patches the issue.
Infinite Loop
Netty HTTP/2 DoS via Flooded CONTINUATION frames (V4.1.132/4.2.10 fix)
CVE-2026-33871
7.5 - High
- March 27, 2026
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server's lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
Allocation of Resources Without Limits or Throttling
Netty HTTP/1.1 Chunked Request Smuggling (<4.1.132, <4.2.10)
CVE-2026-33870
7.5 - High
- March 27, 2026
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
HTTP Request Smuggling
Go jsonparser Delete Negative Slice Index DoS
CVE-2026-32285
7.5 - High
- March 26, 2026
The Delete function fails to properly validate offsets when processing malformed JSON input. This can lead to a negative slice index and a runtime panic, allowing a denial of service attack.
Improper Validation of Specified Index, Position, or Offset in Input
DoS via Exponential Regex Expansion in path-to-regexp 8.4.0
CVE-2026-4926
7.5 - High
- March 26, 2026
Impact: A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service. Patches: Fixed in version 8.4.0. Workarounds: Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
Resource Exhaustion
Prototype Pollution via __proto__ in flatted prior to 3.4.2
CVE-2026-33228
9.8 - Critical
- March 20, 2026
flatted is a circular JSON parser. Prior to version 3.4.2, the parse() function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key "__proto__" returns Array.prototype via the inherited getter. This object is then treated as a legitimate parsed value and assigned as a property of the output object, effectively leaking a live reference to Array.prototype to the consumer. Any code that subsequently writes to that property will pollute the global prototype. This issue has been patched in version 3.4.2.
Prototype Pollution
Ruby JSON 2.14.0-2.15.2.1 Format String Injection (allow_duplicate_key: false)
CVE-2026-33210
9.1 - Critical
- March 20, 2026
Ruby JSON is a JSON implementation for Ruby. From version 2.14.0 to before versions 2.15.2.1, 2.17.1.2, and 2.19.2, a format string injection vulnerability can lead to denial of service attacks or information disclosure, when the allow_duplicate_key: false parsing option is used to parse user supplied documents. This issue has been patched in versions 2.15.2.1, 2.17.1.2, and 2.19.2.
Use of Externally-Controlled Format String
gRPC-Go Auth Bypass (1.79.2) via noncanonical :path
CVE-2026-33186
9.1 - Critical
- March 20, 2026
gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, "deny" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback "allow" rule was present. This affects gRPC-Go servers that use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`; AND that have a security policy contains specific "deny" rules for canonical paths but allows other requests by default (a fallback "allow" rule). The vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server. The fix in version 1.79.3 ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string. While upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods: Use a validating interceptor (recommended mitigation); infrastructure-level normalization; and/or policy hardening.
AuthZ
lz4_flex Rust LZ4 OOB Read Leak <0.11.6, 0.12.0-0.12.1
CVE-2026-32829
7.5 - High
- March 20, 2026
lz4_flex is a pure Rust implementation of LZ4 compression/decompression. In versions 0.11.5 and below, and 0.12.0, decompressing invalid LZ4 data can leak sensitive information from uninitialized memory or from previous decompression operations. The library fails to properly validate offset values during LZ4 "match copy operations," allowing out-of-bounds reads from the output buffer. The block-based API functions (`decompress_into`, `decompress_into_with_dict`, and others when `safe-decode` is disabled) are affected, while all frame APIs are unaffected. The impact is potential exposure of sensitive data and secrets through crafted or malformed LZ4 input. This issue has been fixed in versions 0.11.6 and 0.12.1.
Insertion of Sensitive Information Into Sent Data
Arbitrary JS Code Execution via Unsanitized create_function in Locutus <3.0.14
CVE-2026-32304
7.5 - High
- March 12, 2026
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to 3.0.14, the create_function(args, code) function passes both parameters directly to the Function constructor without any sanitization, allowing arbitrary code execution. This is distinct from CVE-2026-29091 which was call_user_func_array using eval() in v2.x. This finding affects create_function using new Function() in v3.x. This vulnerability is fixed in 3.0.14.
Code Injection
flatted <=3.3.0 Recursion Stack Overflow in parse()
CVE-2026-32141
7.5 - High
- March 12, 2026
flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow that crashes the Node.js process. This vulnerability is fixed in 3.4.0.
Stack Exhaustion
Quinn<0.11.14 DoS via Malformed quic_transport_parameters (panic)
CVE-2026-31812
5.3 - Medium
- March 10, 2026
Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Prior to 0.11.14, a remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication. This vulnerability is fixed in 0.11.14.
Uncaught Exception
RCE in simple-git v3.153.32.2 Node.js
CVE-2026-28292
8.8 - High
- March 10, 2026
`simple-git`, an interface for running git commands in any node.js application, has an issue in versions 3.15.0 through 3.32.2 that allows an attacker to bypass two prior CVE fixes (CVE-2022-25860 and CVE-2022-25912) and achieve full remote code execution on the host machine. Version 3.23.0 contains an updated fix for the vulnerability.
Shell injection
node-tar v<7.5.10 Hardlink Exploit via C:../ Target Path Traversal
CVE-2026-29786
8.6 - High
- March 07, 2026
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.
Directory traversal
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