CVE-2026-5027

8.8 highEPSS 40%

High (8.8) in langflow langflow. EPSS 40% chance of exploitation in the next 30 days.

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 ('../').

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 40% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2026-03-27
Modified: 2026-08-18
Record from: the NVD, synced 2026-10-19

Affected

langflow:langflow

References

https://www.tenable.com/security/research/tra-2026-26

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