CVE-2026-33017

Code Injection in Langflow. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 25 March 2026.

Product
Langflow
Added to CISA's catalog
Federal fix-by date
Ransomware
No known use in ransomware campaigns

CISA’s description.

Langflow contains a code injection vulnerability that could allow building public flows without requiring authentication.
  • CVE-2026-0770 Inclusion of Functionality from Untrusted Control Sphere, added
  • CVE-2026-55255 Authorization Bypass Through User-Controlled Key, added
  • CVE-2025-34291 Origin Validation Error, added

Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.