A serious security vulnerability has been identified in the IBM Langflow application, a tool some website owners deploy on their hosting accounts. This flaw allows unauthenticated attackers (people without login credentials for your Langflow setup) to run arbitrary harmful code on servers running default Langflow configurations, granting the attacker full remote control of the affected server.
Source: CISA Known Exploited Vulnerabilities Catalog — https://nvd.nist.gov/vuln/detail/CVE-2026-9198
