{"id":"CVE-2026-87013","aliases":["GHSA-8r35-5x5r-hv74"],"url":"https://o3.security/vulnerability/CVE-2026-87013","summary":"Open WebUI: Any authenticated user can start a non-terminating request via a folder parent cycle","details":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/v1/folders/{id}/update/parent allowed a user to place a folder under itself or one of its descendants, while the folder tree walks used by DELETE /api/v1/folders/{id} and POST /api/v1/folders/{id}/read did not track visited folder identifiers. An authenticated user could persist a parent cycle and start a request that consumed CPU and memory indefinitely, with the condition remaining stored until repaired. This issue is fixed in version 0.11.1.","published":"2026-09-09T21:00:15.466Z","modified":"2026-09-11T03:48:40.145193468Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":"0.11.1"}],"fix":{"url":"https://github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa2568ae902f4","label":"open-webui/open-webui@23b3a69"},"references":[{"type":"WEB","url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87013.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87013"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa2568ae902f4"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/pull/28748"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-11T03:48:40.145193468Z"}}