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...