Open WebUI from 0.9.0 before 0.11.4 contains a denial of service vulnerability that allows authenticated users with automations permission to stall the instance by submitting unsatisfiable recurrence rules. Attackers can repeatedly send rules like February 30th to the automations create or update endpoints, blocking the shared event loop for seconds per request.
Metrics
Affected Vendors & Products
References
History
Fri, 23 Oct 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-834 |
Tue, 13 Oct 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 12 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Open WebUI from 0.9.0 before 0.11.4 contains a denial of service vulnerability that allows authenticated users with automations permission to stall the instance by submitting unsatisfiable recurrence rules. Attackers can repeatedly send rules like February 30th to the automations create or update endpoints, blocking the shared event loop for seconds per request. | |
| Title | Open WebUI 0.9.0 before 0.11.4 Denial of Service via Recurrence Rule Validation | |
| First Time appeared |
Openwebui
Openwebui open Webui |
|
| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openwebui
Openwebui open Webui |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-12T16:04:57.527Z
Updated: 2026-10-23T21:58:00.118Z
Reserved: 2026-10-12T14:13:39.026Z
Link: CVE-2026-109299
Updated: 2026-10-13T15:49:06.297Z
Status : Awaiting Analysis
Published: 2026-10-12T17:17:23.540
Modified: 2026-10-23T22:16:55.073
Link: CVE-2026-109299
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