High 8.0Published Jul 9, 2026

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)

Updated under an hour ago (Oct 28, 2026, 3:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-287, CWE-290
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

open-webui open-webui open_webui:open_webui (from the name)	before 0.10.0	CNA record
openwebui open_webui openwebui:open_webui	before 0.10.0	NVD

References

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-j657-m4c4-24jq	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/open-webui/open-webui/pull/26042	x-refsource-misc, issue-tracking, patch
https://github.com/open-webui/open-webui/commit/5f3a628a8d291bb5d33e1a0b0c89fb62a2927934	x-refsource-misc, patch
https://github.com/open-webui/open-webui/releases/tag/v0.10.0	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.