{"cve":"CVE-2026-59225","nvd":{"published":"2026-07-09T17:17:03.903","modified":"2026-07-10T02:44:19.193","status":"Analyzed","description":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected underlying model. The task routes call utils.chat.generate_chat_completion() directly. In that direct path, arena fallback resolution happens after the wrapper access check and then recurses with bypass_filter=True, skipping the selected submodel's access check. This issue is fixed in version 0.10.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","score":6.3},"cwes":["CWE-862"],"references":["https://github.com/open-webui/open-webui/commit/dc4924b66e655b315e3be4430a3e51b7d5c20acc","https://github.com/open-webui/open-webui/pull/26046","https://github.com/open-webui/open-webui/releases/tag/v0.10.0","https://github.com/open-webui/open-webui/security/advisories/GHSA-m3qf-58wf-w979"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:44:02.134301115+00:00"},"epss":{"cve":"CVE-2026-59225","score":0.00367,"percentile":0.30556,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m3qf-58wf-w979","url":"https://osv.dev/vulnerability/GHSA-m3qf-58wf-w979","summary":"Open WebUI: Arena task endpoints can bypass underlying model access controls","modified":"2026-08-04T14:40:45.590199979Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.8.12 <0.10.0"],"fixed":["0.10.0"]}]},{"id":"PYSEC-2026-3601","url":"https://osv.dev/vulnerability/PYSEC-2026-3601","summary":"Open WebUI: Arena task endpoints can bypass underlying model access controls","modified":"2026-08-04T14:30:29.004721382Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.8.12 <0.10.0"],"fixed":["0.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}