CVE-2026-12942 Langflow is affected by path traversal due to multiple unauthenticated and insufficiently authorized API endpoints

IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences /.. / to view arbitrary files on the system...

CVE-2026-12942

Langflow OSS (IBM) is affected by CVE-2026-12942 due to a path traversal flaw in unauthenticated API endpoints. Versions 1.0.0–1.10.1 allow remote attackers to access arbitrary files via crafted URL paths containing /../ sequences, potentially exposing credentials and sensitive data. The issue is...

CVE-2026-12945 Langflow is affected by exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

IBM Langflow OSS 1.0.0 through 1.10.1 allows authenticated users to access and manipulate other users' build jobs through improper access control on log retrieval and unauthenticated build endpoints...

CVE-2026-12945

IBM Langflow OSS 1.0.0–1.10.1 is affected by CVE-2026-12945: authenticated users can access and manipulate other users’ build jobs due to improper access control on log retrieval and unauthenticated build endpoints. Affected product: Langflow OSS (1.0.0–1.10.1). Root cause: authorization bypass t...

CVE-2026-12945 Langflow is affected by exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

IBM Langflow OSS 1.0.0 through 1.10.1 allows authenticated users to access and manipulate other users' build jobs through improper access control on log retrieval and unauthenticated build endpoints...

CVE-2026-12945

IBM Langflow OSS 1.0.0 through 1.10.1 allows authenticated users to access and manipulate other users' build jobs through improper access control on log retrieval and unauthenticated build endpoints...

CVE-2026-12940

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

CVE-2026-12940

Langflow OSS versions 1.0.0–1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP stdio launcher. The root cause is in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUS_ENV_VARS blocklist does not include SHELLOPTS, BASHOPTS, and PS4, enab...

CVE-2026-12940 Langflow is affected by remote code execution due to multiple unauthenticated and insufficiently authorized API endpoints

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

EUVD-2026-51240

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

CVE-2026-12940 Langflow is affected by remote code execution due to multiple unauthenticated and insufficiently authorized API endpoints

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

IBM Langflow OSS configuration error vulnerability

IBM Langflow OSS is an open-source low-code visualization AI workflow building tool developed by IBM. It enables developers to quickly build, deploy, and iterate AI agents and RAG applications through drag-and-drop components. Additionally, it supports deep customization using Python to integrate...

CVE-2026-10700: Authorization Bypass Through User-Controlled Key

IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control vulnerabilities in its file handling API that allow unauthorized access to user files.The /api/v1/files/images/flowid/filename endpoint does not enforce authentication or authorization checks, allowing unauthenticated...

CVE-2026-12942: Improper Limitation of a Pathname to a Restricted Directory

IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences /.. / to view arbitrary files on the system...

PT-2026-66540

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description Improper input validation occurs within the PythonREPL sandbox implementation. This issue allows for the execution of unauthorized code by bypassing the restrictions intended for the...

PT-2026-66539

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description A directory traversal issue allows a remote attacker to view arbitrary files on the system. This is achieved by sending a specially crafted URL request containing dot-dot-slash /../...

PT-2026-66519

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description Unauthenticated remote code execution is possible via environment variable injection in the MCP Model Context Protocol stdio launcher. The issue occurs in the...

CVE-2026-12945: Authorization Bypass Through User-Controlled Key

IBM Langflow OSS 1.0.0 through 1.10.1 allows authenticated users to access and manipulate other users' build jobs through improper access control on log retrieval and unauthenticated build endpoints...

CVE-2026-12940: Improper Neutralization of Special Elements used in an OS Command

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

CVE-2026-13444: .NET Misconfiguration: Use of Impersonation

IBM Langflow OSS 1.0.0 through 1.10.1 can allow an attacker to access another user's private vector documents by creating their own flow with matching Chroma persistdirectory and collectionname values. The attacker receives exact victim content in their workflow output despite having no...