Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0.
Metrics
Affected Vendors & Products
References
History
Wed, 05 Aug 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 04 Aug 2026 23:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Open-webui
Open-webui open-webui |
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| Vendors & Products |
Open-webui
Open-webui open-webui |
Tue, 04 Aug 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0. | |
| Title | Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata | |
| Weaknesses | CWE-862 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-04T20:16:11.523Z
Updated: 2026-08-05T14:46:10.771Z
Reserved: 2026-08-04T15:24:41.340Z
Link: CVE-2026-70487
Updated: 2026-08-05T14:46:07.888Z
Status : Received
Published: 2026-08-04T21:16:37.480
Modified: 2026-08-05T16:17:02.617
Link: CVE-2026-70487
No data.