Vulnerability · Published Jul 9, 2026 · Assigned by GitHub_M
CVE-2026-59224Open WebUI: Terminal proxy forwards a spoofable, integrity-unbound user identity to the upstream (X-User-Id header and ws_terminal session_id query injection)
High 8.0
In plain English
A high-severity improper authentication in open-webui from open-webui. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | open-webui | 0.10.0 | GHSA-j657-m4c4-24jq |
| PyPI | open-webui | 0.10.0 | PYSEC-2026-3600 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-webui | open-webui | < 0.10.0 |
Weakness: CWE-287, CWE-290 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-j657-m4c4-24jq x_refsource_CONFIRM
- https://github.com/open-webui/open-webui/pull/26042 x_refsource_MISC
- https://github.com/open-webui/open-webui/commit/5f3a628a8d291bb5d33e1a0b0c89fb62a2927934 x_refsource_MISC
- https://github.com/open-webui/open-webui/releases/tag/v0.10.0 x_refsource_MISC