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Vulnerability record · CVE-2026-59224 · published 9 July 2026

CVE-2026-59224: Openwebui open webui improper authentication vulnerability

Openwebui · Open Webui

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, backend/open_webui/routers/terminals.py built the ws_terminal upstream URL from an unencoded session_id and appended user_id as a query parameter, allowing query injection to make the terminal backend resolve another user identity; the HTTP proxy path also forwarded X-User-Id as an integrity-unbound identity claim. This issue is fixed in version 0.10.0.

8.0 CVSS 3.1 High EPSS 0.39% · top 69.4% CWE-287 · Improper authenticationCWE-290 · Authentication bypass by spoofing
8.0CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
10 Jul 2026Last modified by NVD

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, backend/open_webui/routers/terminals.py built the ws_terminal upstream URL from an unencoded session_id and appended user_id as a query parameter, allowing query injection to make the terminal backend resolve another user identity; the HTTP proxy path also forwarded X-User-Id as an integrity-unbound identity claim. This issue is fixed in version 0.10.0.

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/open-webui/open-webui/commit/5f3a628a8d291bb5d33e1a0b0c89fb62a2927934 Patch
https://github.com/open-webui/open-webui/pull/26042 Issue TrackingPatch
https://github.com/open-webui/open-webui/releases/tag/v0.10.0 ProductRelease Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-j657-m4c4-24jq MitigationVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-59224), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.