HIGHCVE-2026-5027Published Modified CNA tenable
CVE-2026-5027: Langflow - Path Traversal Arbitrary File Write via upload_user_file
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 ('../').
Metrics
- CVSS v3.1
- 8.8
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- langflow-ai / langflow0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HReferences