CVE-2026-54006
Last modified
CVE-2026-54006 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openwebui | Open Webui | < 0.9.6 |
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-f3g7-59qc-pqg6Exploit, Vendor Advisory
- https://github.com/open-webui/open-webui/security/advisories/GHSA-f3g7-59qc-pqg6Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-54006?
How severe is CVE-2026-54006?
How do I fix CVE-2026-54006?
Are you affected by CVE-2026-54006?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST