CVE-2026-44566CRITICAL 9.8EPSS p24.0%

CVE-2026-44566CVE-2026-44566

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.32% probability of exploitation · percentile 24.0% · 2026-06-19T12:03:05Z
Published2026-05-15
Last modified2026-05-19

Underlying weaknesses· 2

CWE-22CWE-434

References

  1. https://github.com/open-webui/open-webui/security/advisories/GHSA-9pgh-j74g-qj6m
  2. https://github.com/open-webui/open-webui/security/advisories/GHSA-9pgh-j74g-qj6m

2

TypeTargetConfidenceTier
WeaknessImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal')cwe-220%live
WeaknessUnrestricted Upload of File with Dangerous Typecwe-4340%live

Related by meaning· 6

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.