MongoDB NoSQL Database

Known Exploited MongoDB Vulnerabilities

The following MongoDB vulnerabilities have been marked by CISA as Known to be Exploited by threat actors.

The vulnerability CVE-2019-10758: MongoDB mongo-express Remote Code Execution Vulnerability is in the top 1% of the currently known exploitable vulnerabilities. The vulnerability CVE-2025-14847: MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability is in the top 5% of the currently known exploitable vulnerabilities.

By the Year

In 2026 there have been 48 vulnerabilities in MongoDB with an average score of 6.4 out of ten. Last year, in 2025 MongoDB had 23 security vulnerabilities published. That is, 25 more vulnerabilities have already been reported in 2026 as compared to last year. Last year, the average CVE base score was greater by 0.06

Recent MongoDB Security Vulnerabilities

CVE	Date	Vulnerability	Products
CVE-2026-11933	Jun 12, 2026	MongoDB JavaScript Engine UAF via BSON-to-Array A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.	MongoDB
CVE-2026-9740	Jun 09, 2026	MongoDB BSON Validator Recursion Crash (CVE20269740) A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions, where each re-entry resets internal depth tracking.	MongoDB
CVE-2026-9735	Jun 09, 2026	MongoDB Server Exposes Auth Credentials in Logs During SASL Auth MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction.	MongoDB
CVE-2026-9754	Jun 09, 2026	MongoDB filemd5 LE: Authenticated Read Role Stack Memory Leak An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command	MongoDB
CVE-2026-9753	Jun 09, 2026	MongoDB $_internalApplyOplogUpdate OOBB via malformed oplog diff The $_internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $_internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command.	MongoDB
CVE-2026-9752	Jun 09, 2026	MongoDB 2dsphere Crash via GeometryCollection NPE in GeoJSON An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS. Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not inspect members of a GeometryCollection, allowing the unsafe path to be reached which ends with an ensuing null-pointer dereference.	MongoDB
CVE-2026-9751	Jun 09, 2026	Plain Text Password Logging via ldapQueryPassword in MongoDB The ldapQueryPassword parameter, when set through the runtime setParameter command, will log the new password to the mongod.log file in plain text.	MongoDB
CVE-2026-9750	Jun 09, 2026	MongoDB Internal Metadata Injection Crash Vulnerability An authenticated user can cause a MongoDB server to crash or return incorrect results by creating documents that interfere with internal metadata processing during query execution. This stems from insufficient separation between user-controlled document fields and internal metadata in certain execution paths.	MongoDB
CVE-2026-9749	Jun 09, 2026	MongoDB $exchange Stage Buffer Update Failure Enables DoS This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer (that is, many results are routed to the same consumer), the server reaches the code path where a full per-consumer buffer is detected but the internal "high watermark" for that key range is not updated as intended.	MongoDB
CVE-2026-9748	Jun 09, 2026	MongoDB $facet Crash via PauseExecution misuse in aggregation pipeline The $_internalConvertBucketIndexStats stage used PauseExecution as a way to signal "skip this document" when an index stats conversion failed. But PauseExecution is not a general purpose skip mechanism, but rather a TeeBuffer-internal signal used solely by $facet to coordinate its sub-pipelines. When this stage is placed before $facet in a pipeline, TeeBuffer receives the unexpected PauseExecution from upstream and hits a hard invariant assertion, crashing mongod.	MongoDB
CVE-2026-9747	Jun 09, 2026	MongoDB Crash via fromRouter:true and userRoles Aggregation Bug Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.	MongoDB
CVE-2026-9746	Jun 09, 2026	MongoDB Crash via $_requestReshardingResumeToken (Change Streams) When using $changestreams and $_requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement.	MongoDB
CVE-2026-9743	Jun 09, 2026	MongoDB 8.0 Aggregation Null _subPipeline Causing DoS In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.	MongoDB
CVE-2026-9742	Jun 09, 2026	MongoDB OIDC Pre-Auth DoS via 'mechanism' param When OIDC authentication is enabled in configuration, clients may set specific values in the "mechanism" parameter of the "authenticate" command that lead to server crash. The authenticate command is accessible to unauthenticated clients, leading to pre-auth denial-of-service in affected product configurations.	MongoDB
CVE-2026-9741	Jun 09, 2026	MongoDB QE $vectorSearch Stage Plaintext Leak A bug in query analysis processing of the $vectorSearch aggregation stage for Queryable Encryption (QE) or Client-Side Field Level Encryption (CSFLE) results in literal values for encrypted fields within the $vectorSearch stage filter expressions to be sent to the server as plaintext instead of ciphertext.	MongoDB
CVE-2026-9101	May 20, 2026	MongoDB Compass: CSV import prototype pollution leads to 1click exec Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.	Compass
CVE-2026-9100	May 20, 2026	MongoDB C Driver GridFS API divisionzero via malformed metadata The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).	C Driver
CVE-2026-8843	May 18, 2026	MongoDB 7.0 (pre-7.0.32) | 2dsphere_bucket Index Crash on Non-TS Buckets Creating a "2dsphere_bucket" index on a non-timeseries bucket collection will succeed, but any subsequent attempt to insert a document which triggers updating that index will crash the server. A similar issue occurs when creating "queryable_encrypted_range" indices. This issue affects MongoDB Server v7.0 versions prior to 7.0.32, v8.0 versions prior to 8.0.21 and v8.2 versions prior to 8.2.6	MongoDB
CVE-2026-6811	May 14, 2026	MongoDB PHP Driver Stack Exhaustion from Deeply Nested BSON Stack exhaustion vulnerability in the MongoDB PHP driver can cause application crashes when processing deeply nested BSON documents in unusual circumstances when the source of these BSON documents is not MongoDB Server.
CVE-2026-8202	May 13, 2026	DoS via $trim/$ltrim/$rtrim in MongoDB 7.0-8.3 (pre 7.0.34, 8.0.23, 8.2.9, 8.3.2) Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8336	May 13, 2026	MongoDB Server <7.0.34/8.0.23/8.2.9/8.3.2: Auth DoS via _internalJsEmit After invoking $_internalJsEmit, which is not intended to be directly accessible, or mapreduce commands map function in a certain way, an authenticated user can subsequently crash mongod when the server-side JavaScript engine (through $where, $function, mapreduce reduce stage, etc.) is used also in a specific way, resulting in a post-authentication denial-of-service. This issue impacts MongoDB Server v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8201	May 13, 2026	Use-After-Free in MongoDB mongocryptd FLE query (v7.0<7.0.34/8.0<8.0.23) A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query. This issue impacts MongoDB Servers mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8200	May 13, 2026	MongoDB Server 7.0 log message data leak via schema validation prior to 7.0.34 When schema validation is enabled on a collection and an update or insert would violate the collection's schema, the local server log message generated may not have all user data redacted.  This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8199	May 13, 2026	MongoDB Server OOM via Bitwise Expr AST (7.0.33,8.0.22,8.2.8,8.3.1) An authenticated user can cause excess memory usage via bitwise match expression AST processing of $bitsAllSet, $bitsAnySet, $bitsAllClear, and $bitsAnyClear. This contributes to memory pressure and may lead to availability loss by OOM. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8053	May 12, 2026	MongoDB Server <=8.3.2 OOB EDR via TimeSeries Bucket Catalog An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution. This issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.	MongoDB
CVE-2026-8431	May 12, 2026	Arbitrary Cmd Exec via Webhook FreeMarker in MongoDB Ops Manager 7.x & 8.0.22- An administrative user with access to configure webhooks can execute arbitrary commands by configuring and then triggering webhooks containing specific FreeMarker template syntax.  This issue affects all MongoDB Ops Manager 7.0 versions and MongoDB Ops Manager versions 8.0.22 and prior.	Ops Manager
CVE-2026-8063	May 07, 2026	Atlas Search $rankFusion/$scoreFusion Null Ptr Crash (MongoDB 8.2<8.2.7) An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view. When resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stages input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server. This issue affects MongoDB Server 8.2 versions prior to 8.2.7.	MongoDB
CVE-2026-6691	May 06, 2026	MongoDB C Driver GSSAPI Username Canonicalization Heap Overflow The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with authMechanism=GSSAPI.	C Driver
CVE-2026-6915	Apr 29, 2026	MongoDB Auth Flaw: Auth'd User Can Alter Another User's Auth Data An authorization flaw in the user management command could allow an authenticated user to make limited changes to authentication-related data associated with another user account. This could affect how authentication is performed for the impacted account.	MongoDB
CVE-2026-6914	Apr 29, 2026	MongoDB Server v7-8.2 DoS via MD5 on Malformed BSON Computing the MD5 checksum of a malformed BSON object under specific conditions may cause loss of availability in MongoDB server. This issue affects all MongoDB Server v8.2 versions, all MongoDB Server v8.1 versions, MongoDB Server v8.0 versions prior to 8.0.21, MongoDB Server v7.0 versions prior to 7.0.32	MongoDB
CVE-2026-6231	Apr 13, 2026	MongoDB C Driver <1.30.5, 2.0.x: bson_validate Skips Validation Bypass The bson_validate function may return early on specific inputs and incorrectly report success. This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. The issue may affect applications that rely on these functions to validate untrusted BSON data before further processing. This issue affects MongoDB C Driver versions prior to 1.30.5, MongoDB C Driver version 2.0.0 and MongoDB C Driver version 2.0.1	C Driver
CVE-2026-5170	Mar 30, 2026	MongoDB Server <=8.2.2 DDoS: mongod Crash during Replica Set Promotion A user with access to the cluster with a limited set of privilege actions can trigger a crash of a mongod process during the limited and unpredictable window when the cluster is being promoted from a replica set to a sharded cluster. This may cause a denial of service by taking down the primary of the replica set. This issue affects MongoDB Server v8.2 versions prior to 8.2.2, MongoDB Server v8.0 versions between 8.0.18, MongoDB Server v7.0 versions between 7.0.31.	MongoDB
CVE-2026-4359	Mar 17, 2026	MongoDB C Driver Crash via Malformed HTTP Response (CVE-2026-4359) A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.	C Driver
CVE-2026-4358	Mar 17, 2026	MongoDB SBE: $lookup Auth Query Can Trigger Double-Free/UAF A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.	MongoDB
CVE-2026-4148	Mar 17, 2026	UAF in MongoDB $lookup Aggregation Pipeline A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline.	MongoDB
CVE-2026-4147	Mar 17, 2026	MongoDB: FileMD5 Command Allows Authenticated Read of Uninitialized Stack Memory An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command.	MongoDB
CVE-2026-2303	Feb 10, 2026	Heap OOB Read in mongo-go-driver GSSAPI CGo Bindings The mongo-go-driver repository contains CGo bindings for GSSAPI (Kerberos) authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not guaranteed to be null-terminated or have extra padding, this results in reading one byte past the allocated heap buffer.
CVE-2026-2302	Feb 10, 2026	Mongoid::Criteria.from_hash allows ARB Ruby code exec via crafted Hash Under specific conditions when processing a maliciously crafted value of type Hash r, Mongoid::Criteria.from_hash may allow for executing arbitrary Ruby code.	MongoDB
CVE-2026-25613	Feb 10, 2026	MongoDB Crash via Invalid Compound Wildcard Index An authorized user may disable the MongoDB server by issuing a query against a collection that contains an invalid compound wildcard index.	MongoDB
CVE-2026-1849	Feb 10, 2026	MongoDB Server OOM via deep nested expression evaluation MongoDB Server may experience an out-of-memory failure while evaluating expressions that produce deeply nested documents. The issue arises in recursive functions because the server does not periodically check the depth of the expression.	MongoDB
CVE-2026-1850	Feb 10, 2026	MongoDB Query Planner OOM via Complex Queries Complex queries can cause excessive memory usage in MongoDB Query Planner resulting in an Out-Of-Memory Crash.	MongoDB
CVE-2026-25609	Feb 10, 2026	Profile cmd validation flaw enables readonly misclassification (CVE202625609) Incorrect validation of the profile command may result in the determination that a request altering the 'filter' is read-only.	MongoDB
CVE-2026-25610	Feb 10, 2026	MongoDB Server Crash via $geoNear Pipeline Index Hints An authorized user may trigger a server crash by running a $geoNear pipeline with certain invalid index hints.	MongoDB
CVE-2026-1848	Feb 10, 2026	MongoDB: proxy_protocol header miscount leads to server crash Connections received from the proxy port may not count towards total accepted connections, resulting in server crashes if the total number of connections exceeds available resources. This only applies to connections accepted from the proxy port, pending the proxy protocol header.	MongoDB
CVE-2026-1847	Feb 10, 2026	MongoDB Replica Set Oplog Fetch Failure Causing Crash Inserting certain large documents into a replica set could lead to replica set secondaries not being able to fetch the oplog from the primary. This could stall replication inside the replica set leading to server crash.	MongoDB
CVE-2026-25612	Feb 10, 2026	MongoDB Server Lock Collision Unavailability Vulnerability The internal locking mechanism of the MongoDB server uses an internal encoding of the resources in order to choose what lock to take. Collections may inadvertently collide with one another in this representation causing unavailability between them due to conflicting locks.	MongoDB
CVE-2026-25611	Feb 10, 2026	MongoDB Server Memory Exhaustion via Unauthenticated Messages A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.	MongoDB
CVE-2025-14911	Jan 27, 2026	MongoDB GridFS chunkSize OOB buffer overflow User-controlled chunkSize metadata from MongoDB lacks appropriate validation allowing malformed GridFS metadata to overflow the bounding container.	C Driver
CVE-2025-14847	Dec 19, 2025	MongoDB Server Uninit Heap Read via Zlib Header Len Mismatch <4.2.0 Mismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.	MongoDB
CVE-2025-14345	Dec 09, 2025	MongoDB Server 7.0/8.0/8.2 Before x.x: Post-Auth Tx Commit Flaw A post-authentication flaw in the network two-phase commit protocol used for cross-shard transactions in MongoDB Server may lead to logical data inconsistencies under specific conditions which are not predictable and exist for a very short period of time. This error can cause the transaction coordination logic to misinterpret the transaction as committed, resulting in inconsistent state on those shards. This may lead to low integrity and availability impact. This issue impacts MongoDB Server v8.0 versions prior to 8.0.16, MongoDB Server v7.0 versions prior to 7.0.26 and MongoDB server v8.2 versions prior to 8.2.2.	MongoDB