CVE-2026-44558
Last modified
CVE-2026-44558 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the channel router does not call filter_allowed_access_grants on either create or update paths. EPSS estimates a 0.19% 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 0.9.0, the channel router does not call filter_allowed_access_grants on either create or update paths. A non-admin user who can create group channels (or who owns a channel) can submit arbitrary access grants — including public wildcard grants — and those grants are stored verbatim, bypassing the admin's permission framework. This vulnerability is fixed in 0.9.0.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openwebui | Open Webui | < 0.9.0 |
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-7rjh-px4v-5w55Exploit, Vendor Advisory
- https://github.com/open-webui/open-webui/security/advisories/GHSA-7rjh-px4v-5w55Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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