CVE-2025-3248: Langflow Missing Authentication Vulnerability. Langflow
Langflow Missing Authentication Vulnerability. Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.
- CISA KEV-listed (remediation due 2025-05-26)
- used in ransomware campaigns
- EPSS 100.0% (100.0% percentile)
- CVSS 9.8 critical
Related briefings
- Researchers catch an AI running a ransomware attack on its own 2026-07-13
- Hackers hijack exposed Langflow AI servers to mine cryptocurrency 2026-06-24