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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-12940

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

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Status
Published
Published
Updated
Assigning organization
ibm

Description

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 DANGEROUS_ENV_VARS blocklist fails to include SHELLOPTS , BASHOPTS , and PS4 environment variables.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

IBM Langflow OSS

  • 1.0.0 to ≤ 1.10.1affected

References