CVE-2026-87998
highOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
Vendor / product: Openwebui — open webui
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/knowledge/{id}/delete in backend/open_webui/routers/knowledge.py authorized deletion against the knowledge base but then removed its administrator-owned external connection without a separate administrator check or a check for other dependent knowledge bases. A non-administrator with write access to one external knowledge base could delete shared instance configuration and make every other knowledge base using that connection unavailable. This issue is fixed in version 0.11.1.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/open-webui/open-webui/commit/dc03e7e595d61be97b25a1dd7bb99ad264f73199 security-advisories@github.com
- https://github.com/open-webui/open-webui/pull/28113 security-advisories@github.com
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1 security-advisories@github.com
- https://github.com/open-webui/open-webui/security/advisories/GHSA-2724-6cpj-gf3v security-advisories@github.com