Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-3vf6-64vr-3g56 | Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 04 Aug 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Open-webui
Open-webui open-webui |
|
| Vendors & Products |
Open-webui
Open-webui open-webui |
Tue, 04 Aug 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0. | |
| Title | Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint | |
| Weaknesses | CWE-862 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-04T19:54:35.579Z
Reserved: 2026-08-04T15:24:41.340Z
Link: CVE-2026-70483
No data.
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-04T21:45:04Z
Weaknesses
Github GHSA