CVE-2026-5027: exploitation status and patch state

CVE-2026-5027 · CVSS 8.8 HIGH · EPSS 40%

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').

Is CVE-2026-5027 exploited?

Which products and versions are affected?

Is there a patch?

langflow-ai's record doesn't name a fixed version.

langflow-ai advisory

What PlainSec published about CVE-2026-5027

Primary sources

What this record does not say

KEV and EPSS are re-checked daily. Record last updated 2026-10-25.