CVE-2026-44565 open-webui CVE debrief

Who should care

Administrators and operators of self-hosted Open WebUI deployments, especially environments that allow user file uploads or run the service with filesystem write access outside a tightly confined uploads directory. Security teams should also care if the application is exposed to multiple authenticated users or runs with broad service-account permissions.

Technical summary

The flaw is a path traversal issue in the audio upload handling path. Instead of fully normalizing and constraining the uploaded filename, Open WebUI accepts the request-derived name as-is. By embedding dot-segments, an attacker with upload capability can force the server to resolve the destination outside the intended uploads directory. The impact is arbitrary file write within the permissions of the web server process, which aligns with the reported confidentiality, integrity, and availability impact profile of the CVSS vector (network reachable, low complexity, privileges required, no user interaction, integrity high, availability high).

Defensive priority

High. This is a straightforward file-write primitive in a network-facing upload path, and it affects authenticated users. The safest response is to upgrade immediately to 0.6.10 or later and reduce the service account's filesystem reach until remediation is complete.

Recommended defensive actions

• Upgrade Open WebUI to 0.6.10 or later.
• Audit the service account's filesystem permissions and restrict write access to only the intended uploads directory.
• Review upload handling controls to ensure filenames are normalized, validated, and confined to a safe base directory.
• Check for unexpected files or changes outside the uploads directory, especially near the time of suspicious audio uploads.
• If the deployment supports it, isolate uploads in a dedicated volume or container boundary to limit the impact of future write-path issues.
• Monitor logs for upload attempts containing path separators or dot-segment patterns.

Evidence notes

This debrief is based on the supplied CVE record and the linked GitHub Security Advisory. The NVD record lists the issue as published on 2026-05-15 and modified on 2026-05-18, with CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H and CWE-22. The advisory states the issue is fixed in Open WebUI 0.6.10. No KEV listing was provided in the supplied corpus.

Official resources