CVE-2026-13448

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.

Score

CVSS 3.1 9.8 Critical

Status

Modified - psirt@us.ibm.com

Published

2026-07-17

Last modified

2026-10-24

Weaknesses

CWE-184

Affected products

• Langflow Oss (Ibm)
• Langflow (Langflow)

References

• https://www.ibm.com/support/pages/node/7279997