# CVE-2025-34291: A Langflow bug is being used in attacks

Status: Being used now (CISA KEV, added 2026-05-21)
Who: 
Do this: 

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is Langflow Langflow (CVE-2025-34291) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2025-34291. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official description
Langflow contains an origin validation error vulnerability in which an overly permissive CORS configuration combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. This could allow the attacker to execute arbitrary code and achieve full system compromise via obtained tokens that permit access to authenticated endpoints.

## Sources
- https://github.com/langflow-ai/langflow/releases/tag/v1.9.3
- https://github.com/langflow-ai/langflow/issues/11465#event-25774545848
- https://nvd.nist.gov/vuln/detail/CVE-2025-34291
- https://nvd.nist.gov/vuln/detail/CVE-2025-34291

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.