CVE-2026-87017

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.1, the built-in knowledge search tool passed the caller's readable knowledge identifiers through a metadata filter, but the search methods in eleven shipped vector backends ignored that filter. An authenticated user on an affected backend could enumerate the identifiers, names, and descriptions of inaccessible knowledge bases from the shared collection, although the associated document text remained in separate collections. This issue is fixed in version 0.11.1.

• CWE-200
• CWE-863

• https://github.com/open-webui/open-webui/commit/1d6d4e6e6647e1d403438ede7bd9ba20bc4cc8f6Patch
• https://github.com/open-webui/open-webui/releases/tag/v0.11.1Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-pcvc-8vrv-8q6wExploit, Vendor Advisory

Published

Sep 9, 2026

Last Modified

Sep 16, 2026

Status

Analyzed

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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