IBM Langflow Oss

IBM Langflow OSS 1.0.01.10.1 SaveToFile Absolute Path UI Bypass
CVE-2026-13445 8.1 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.1 can allow an authenticated attacker to exploit the SaveToFile component to read and modify another user's uploaded files by specifying absolute paths pointing to victim storage locations. In append mode, the attacker's workflow reads victim file contents, appends attacker-controlled data, and uploads a copy containing victim data to the attacker's namespace (confidentiality breach). In overwrite mode, the attacker can replace victim file contents with arbitrary data (integrity breach). This breaks the storage ownership boundary between users.

Insecure Direct Object Reference / IDOR

IBM Langflow OSS 1.0.0-1.10.1 Hard-Coded Credential Exposure
CVE-2026-13446 9.8 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.1 contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.

Use of Hard-coded Credentials

IBM Langflow OSS RCEx before 1.10.2 via /api/v1/build_public_tmp
CVE-2026-13448 8.1 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.

IBM Langflow OSS 1.0.0-1.10.1 Auth CmdExec via Python Interpreter
CVE-2026-14499 8.8 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.1 Langflow could allow an authenticated user to execute arbitrary commands with elevated privileges on the system due to improper validation of user supplied input in the Python Interpreter component.

Shell injection

IBM Langflow <1.10.0 Arbitrary File Write via Malicious Flow
CVE-2026-7667 8.8 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows an authenticated attacker to create a malicious flow pointing to an attacker-controlled URL that returns a specially crafted Content-Disposition header (e.g., filename="../../../target/path" ), enabling arbitrary file write operations with attacker-controlled content to any path accessible by the Langflow process.

Directory traversal

IBM Langflow_OSS 1.0.0-1.10.0 SSRF via insecure default config
CVE-2026-7754 7.7 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow 1.9.0 could allow server-side request forgery (SSRF) due to insecure default configuration and incomplete enforcement of the SSRF protection mechanism.

Remote Code Exec in IBM Langflow OSS 1.0-1.10.0 MCP Config
CVE-2026-7755 8.8 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow remote code execution due to incomplete validation enforcement on MCP server configuration files.

IBM Langflow OSS 1.0.0-1.10.0 Authenticated File Read & JWT Forgery
CVE-2026-7872 7.5 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows an authenticated attacker to read arbitrary files including the JWT signing key and forge authentication tokens for any user.

Directory traversal

IBM Langflow OSS <1.11: Authenticated Runtime Param Override via API
CVE-2026-8056 8.8 - High - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated users to override component parameters at runtime via the API. A critical security flaw exists in the parameter filtering mechanism within the `apply_tweaks()` function.

Code Injection

IBM Langflow 1.0.0-1.10.0 RCE via AsyncDiskCache pickle.loads
CVE-2026-8476 9.9 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class uses Python's unsafe pickle.loads() function to deserialize cached objects from disk without validation, integrity verification, or authentication, enabling arbitrary code execution when malicious pickle payloads are processed. Attackers who can influence cached data through file system access, malicious workflow inputs, custom components, or API manipulation can achieve complete system compromise with the privileges of the Langflow server process.

Marshaling, Unmarshaling

IBM Langflow OSS RCE in /api/v1/validate/code via exec() v1.0.01.10.0
CVE-2026-8481 9.9 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the code validation API endpoint. The POST /api/v1/validate/code endpoint accepts user-supplied Python code and executes it directly using Python's built-in exec() function without sandboxing, input validation, or privilege restrictions, enabling any authenticated user to execute arbitrary system commands with the full privileges of the Langflow server process.

Code Injection

Unauthenticated Webhook RPC RCE in IBM Langflow 1.0.01.10.0
CVE-2026-8505 9.8 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).

Auth Escalation & RCE in IBM Langflow OSS 1.0.0-1.10.0
CVE-2026-8635 9.9 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated users to escalate privileges to superuser by directly manipulating the database, execute arbitrary system commands, and achieve full system compromise with Langflow service permissions.

Code Injection

IBM Langflow 1.0.0-1.10.0 APRequest CF Path Traversal File Write
CVE-2026-8859 9.9 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the "Save to File" feature is enabled, where filenames extracted from HTTP response Content-Disposition headers are not sanitized before being joined to the temporary directory path. An attacker controlling an external HTTP server can supply crafted filename values containing path traversal sequences (e.g., ../), enabling arbitrary file writes to locations accessible by the Langflow process.

Directory traversal

IBM Langflow OSS 1.0.0-1.10.0 auto_login RCE via superuser bearer tokens
CVE-2026-9103 9.8 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication when the AUTO_LOGIN configuration is enabled (enabled by default), which may allow an unauthenticated network attacker to obtain full administrative access. Additionally, permissive cross-origin resource sharing (CORS) settings may allow tokens to be exposed to unintended origins, increasing the risk of unauthorized access.

Missing Authentication for Critical Function

IBM Langflow OSS 1.0.0-1.10.0 ToolGuard Code Injection via Unvalidated Input
CVE-2026-9135 9.9 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow versions up to 1.9.2 (commit 94981c443d4918517b9e8163d70fc598dc33a32d) contain a code injection vulnerability in the Policies component's ToolGuard integration that bypasses the allow_custom_components=false security control. The vulnerability exists because the validation mechanism only checks the main component source code in node_template["code"]["value"] but fails to validate dynamic CodeInput fields that store generated ToolGuard Python files. Attackers can embed malicious Python code in these unvalidated dynamic fields, which are persisted in Flow.data and later executed server-side when a guarded tool is invoked through the ToolGuard runtime. This allows authenticated users with flow creation privileges to achieve arbitrary Python code execution on the backend despite custom component restrictions. The vulnerability can be escalated through cross-tenant flow manipulation via the agentic MCP update_flow_component_field tool, which accepts attacker-controlled user_id parameters, enabling attackers to inject malicious code into victim users' flows. When combined with publicly accessible flows and specific misconfigurations (AUTO_LOGIN=true, NEW_USER_IS_ACTIVE=true), the attack can be conducted with reduced authentication requirements.

Code Injection

IBM Langflow OSS 1.0-1.10 RCE via /api/v1/auto_login + validate/code
CVE-2026-9198 9.8 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments

Code Injection

IBM Langflow OSS 1.0.0-1.10.0 Unauth Unlimited Account Creation Enables RCE
CVE-2026-9202 9.8 - Critical - July 17, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true (documented deployment option), newly created accounts are immediately active and can authenticate to reach RCE endpoints, bypassing the need for AUTO_LOGIN.

Missing Authentication for Critical Function

IBM Langflow SSRF Bypass via follow_redirects (v1.0.0-1.9.3)
CVE-2026-10129 8.5 - High - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.3 contains a Server-Side Request Forgery (SSRF) protection bypass vulnerability in the API Request component. An authenticated attacker with low-level privileges (flow author role) can bypass SSRF protections by enabling the follow_redirects parameter and supplying a public URL that redirects to internal/localhost addresses. The vulnerability exists because the application validates only the initial URL but does not re-validate redirect destinations. This allows attackers to access internal HTTP services, localhost endpoints, cloud metadata services, and private network resources that should be unreachable when SSRF protection is enabled. Successful exploitation can lead to disclosure of sensitive information including credentials, tokens, internal API responses, and administrative panel data.

SSRF

IBM Langflow OSS 1.0.0-1.9.3 RCE: code exec via public flow tool_code
CVE-2026-10134 10 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.

Code Injection

IBM Langflow OSS 1.0.01.10.0 Voice Mode SharedState Leak: CrossTenant Credential
CVE-2026-10140 9.6 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 voice mode contains improper shared-state handling that allows reuse of API clients across tenant boundaries. An authenticated attacker can manipulate cache state to cause requests from other users to be processed using incorrect upstream API credentials, leading to cross-tenant billing and accountability misattribution.

Insecure Direct Object Reference / IDOR

IBM Langflow OSS 1.01.9.3 SSRF via URL TOCTOU
CVE-2026-10546 7.1 - High - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.3 contains a Server-Side Request Forgery (SSRF) vulnerability in the URL component ( src/lfx/src/lfx/components/data_source/url.py ) due to a Time-of-Check/Time-of-Use (TOCTOU) race condition that can be exploited via DNS rebinding.

SSRF

Authmissing in IBM Langflow OSS leads to info disclosure & DoS (v1.0.01.9.6)
CVE-2026-10560 8.2 - High - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.6 contains a missing authentication vulnerability in /api/v1/build_public_tmp/ endpoints that allows an unauthenticated attacker to read build event data or cancel jobs using a valid job identifier, resulting in information disclosure and denial of service.

authentification

IBM Langflow SSRF via RSSReader/SearXNG before 1.9.6
CVE-2026-10564 8.2 - High - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.6 contains a Server-Side Request Forgery (SSRF). The legacy RSSReaderComponent in rss.py and SearXNG component in searxng.py make unvalidated HTTP requests to user-controlled URLs, bypassing SSRF protections introduced in version 1.9.3. An authenticated attacker can exploit this to access internal resources including cloud metadata services (AWS/Azure/GCP IMDS), potentially exfiltrating IAM credentials and enumerating internal networks. The vulnerability can also be triggered through prompt injection in agentic workflows due to tool_mode=True exposure.

SSRF

IBM Langflow OSS <=1.9.6: Unauth Access via MCP Streamable Endpoint Auth Flaw
CVE-2026-7663 9.1 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

AuthZ

IBM Langflow OSS 1.0.0-1.10.0 RCE via Unchecked Flow Node Types
CVE-2026-7803 9.8 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 could allow arbitrary code execution due to improper validation of flow nodes with missing or empty component type fields.

Improper Input Validation

Arbitrary Code Exec via Redis in IBM Langflow OSS 1.0.0-1.10.0
CVE-2026-7871 9.8 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code with full application privileges, compromising all secrets, data, and system integrity.

Marshaling, Unmarshaling

IBM Langflow OSS 1.0.0-1.10.0: OS Command Injection via Authenticated Access
CVE-2026-7873 9.9 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.

Code Injection

IBM Langflow 1.0.0-1.10.0: Weak KDF exposes stored credentials
CVE-2026-7874 9.1 - Critical - June 30, 2026

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow disclosure of all stored credentials due to the use of a weak and reversible key derivation mechanism for encryption at rest.

PRNG

IBM Langflow OSS <1.8.4: Unauth MCP Access via Streamable Transport
CVE-2026-7664 9.8 - Critical - June 22, 2026

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

authentification

IBM Langflow 1.0-1.9.3 Auth Bypass & Improper Python Exec Isolation
CVE-2026-10561 10 - Critical - June 22, 2026

IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise

Code Injection

Auth Bypass via IDOR in IBM Langflow OSS 1.0.0-1.9.1
CVE-2026-7787 7.5 - High - June 11, 2026

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references.

Insecure Direct Object Reference / IDOR

IBM Langflow OSS 1.0.0-1.9.0 DoS via Uncontrolled Resource Consumption
CVE-2026-7528 7.1 - High - May 27, 2026

IBM Langflow OSS 1.0.0 through 1.9.0 could allow a denial of service due to uncontrolled resource consumption.

Resource Exhaustion

IBM Langflow OSS 1.9.1 RCE via Symlink during Archive Extraction
CVE-2026-7524 9.8 - Critical - May 27, 2026

IBM Langflow OSS 1.0.0 through 1.9.1 could allow remote code execution due to improper validation of symbolic links during archive extraction.

Directory traversal

CVE-2026-6542: IBM Langflow OSS 1.0.0-1.8.4 flow_id Info Disclosure and Deletion
CVE-2026-6542 6.5 - Medium - April 30, 2026

IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.

Insecure Direct Object Reference / IDOR