Paper/Archive/CVE-2026-44566

CVE-2026-44566

open-webui open-webui — Open WebUI: Arbitrary File Upload and Path Traversal

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 27.1.271 × 205.4 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.

Affected

ProductAffectedFixed inSource

open-webui< 0.1.124–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

GitHub_M (CNA)7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

exploitgithub.com/open-webui/open-webui/security/advisories/GHSA-9pgh-j74g-qj6m