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

CVE-2026-12940

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
IBM / Langflow OSS	affected 1.0.0 through 1.10.1

CWE

CWE-78

References

https://www.ibm.com/support/pages/node/7279995

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.