medium6.5
CVE-2026-109299
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 instanc…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Open WebUI From 0.9.0 | before 0.11.4 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/open-webui/open-webui/commit/5fb869db221d9599a576e8e2eea9c3314947d25e
- https://github.com/open-webui/open-webui/security/advisories/GHSA-5w58-mwmh-vf2m
- https://www.vulncheck.com/advisories/open-webui-0.9.0-before-0.11.4-denial-of-service-via-recurrence-rule-validation