Vulnerability Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.0, the legacy chat-completions features block trusted a client-supplied image_generation flag and did not re-check the features.image_generation permission that the direct image routes and native function-calling path enforce. An authenticated user whose image-generation permission had been revoked could still consume the operator's configured image provider through chat completions, spending API credits and provider quota and writing generated files to operator storage, without exposing provider credentials or other users' data. This issue is fixed in 0.11.0.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/open-webui/open-webui/commit/897d69a35c65f8ab54583bb9ca8dc74e
- https://github.com/open-webui/open-webui/pull/26703
- https://github.com/open-webui/open-webui/releases/tag/v0.11.0
- https://github.com/open-webui/open-webui/security/advisories/GHSA-g423-grf7-98rv
FAQ
What is CVE-2026-70484?
CVE-2026-70484 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.0, the legacy chat-completions features block trusted a client-supplied image_generation fla...
How severe is CVE-2026-70484?
CVE-2026-70484 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70484?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.