CVE-2026-54006
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline.
Impact
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, POST /api/v1/calendars/events/{event_id}/update validates that the caller has write access to the calendar the event currently belongs to, but does not validate the destination calendar_id supplied in the request body. The model layer then persists the new calendar_id unconditionally. A regular user-role account can therefore create an event in their own calendar and immediately move it into any other user's calendar whose ID they know — bypassing the authorization check that create_event correctly performs. This vulnerability is fixed in 0.9.6.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | <= 0.9.5 | 0.9.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | before 0.9.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f3g7-59qc-pqg6
- https://github.com/open-webui/open-webui/security/advisories/GHSA-f3g7-59qc-pqg6
- https://nvd.nist.gov/vuln/detail/CVE-2026-54006
- https://github.com/open-webui/open-webui
- https://github.com/pypa/advisory-database/tree/main/vulns/open-webui/PYSEC-2026-2722.yaml
- https://pypi.org/project/open-webui