{"id":"CVE-2026-109291","summary":"Open WebUI 0.6.33 before 0.11.4 Stored XSS via Citation embed_url","details":"Open WebUI from 0.6.33 before 0.11.4 contains a cross-site scripting vulnerability that allows authenticated users to execute script in victims' sessions by storing javascript: URLs in citation embed_url fields. Attackers can share a crafted chat whose citation, when clicked, is passed to window.open, letting them steal localStorage.token and act as the victim.","aliases":["GHSA-qpqv-xwg8-cqpj"],"modified":"2026-10-13T02:47:09.530046859Z","published":"2026-10-12T16:04:52.313Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109291.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109291.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-qpqv-xwg8-cqpj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109291"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/open-webui-0.6.33-before-0.11.4-stored-xss-via-citation-embed-url"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-webui/open-webui","events":[{"introduced":"8d7d79d54b9160425fc5050b3484bec40dd3b44e"},{"fixed":"8bd8b4fac5e059578ac0c74b3c18d11139f88b7d"}],"database_specific":{"extracted_events":[{"introduced":"0.6.33"},{"fixed":"0.11.4"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.10.2","v0.10.1","v0.10.0","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.12","v0.8.11","v0.8.10","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.2","v0.7.1","v0.7.0","v0.6.43","v0.6.42","v0.6.41","v0.6.40","v0.6.39","v0.6.38","v0.6.37","v0.6.36","v0.6.34","v0.6.35","v0.6.33"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109291.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}