medium6.5
CVE-2026-88006
Open WebUI: Users denied by the OAuth role policy can still sign in via token exchange
Impact
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.1, Open WebUI's OAuth token exchange endpoint issues a session for a provider access token without running the OAuth role management that the normal OAuth login callback runs. A user whose provider roles the login callback would refuse, or would demote, could still obtain a working session at their existing role through this endpoint. This issue is fixed in version 0.11.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | >= 0.8.0, < 0.11.1 | 0.11.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | from 0.8.0 before 0.11.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-wvm9-9g5j-623f
- https://github.com/open-webui/open-webui/security/advisories/GHSA-wvm9-9g5j-623f
- https://nvd.nist.gov/vuln/detail/CVE-2026-88006
- https://github.com/open-webui/open-webui/commit/d799e81edbdc971c6deb096b6474cd95b93504bf
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1