CVE-2026-5027CWE-22path-traversal
CVE-2026-5027
High · published March 27, 2026
What it is
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 ('../').
The record
Technical detail
- CVSS v3.1
- 8.8 · HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v4.0
- Not supplied
- EPSS
- 0.04758 · 91.9th percentile
- Weakness
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Published
- 2026-03-27T19:17Z
Affected products (1)
| Product | Versions | Fixed in |
|---|
| langflow/langflow | < 1.9.0 | 1.9.0 |
References (1)
EPSS history
Timeline