{"id":"CVE-2026-59221","summary":"open-webui terminal proxy path traversal guard bypass via 9x encoded traversal","details":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, _sanitize_proxy_path in backend/open_webui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks and be decoded by the upstream terminal server. This issue is fixed in version 0.10.0.","aliases":["GHSA-frvj-c5qp-xj4w"],"modified":"2026-07-15T01:49:15.743488278Z","published":"2026-07-09T17:13:36.193Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59221.json"},"references":[{"type":"WEB","url":"https://github.com/open-webui/open-webui/releases/tag/v0.10.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59221.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59221"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849c"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/pull/26050"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-webui/open-webui","events":[{"introduced":"1a97751e376e00a1897bc3679215ae1c7bd8fd42"},{"fixed":"4d2e13cf2bcc451b33bb6374bea4d2163e6cc94c"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.9.6"},{"fixed":"0.10.0"}]}}],"versions":["0.9.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59221.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}