{"id":"CVE-2026-88866","summary":"WWBN AVideo LoginControl Stored XSS via User-Agent Header","details":"WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the LoginControl plugin that fails to encode the User-Agent header before storing it in login history. Attackers with any valid login account can inject malicious scripts in the User-Agent header that execute in administrator browsers when viewing the Login History page, allowing script execution within the administrator session.","aliases":["GHSA-wg67-62q3-2m33"],"modified":"2026-10-21T03:00:02.934722178Z","published":"2026-09-10T13:05:21.890Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88866.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88866.json"},{"type":"ADVISORY","url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-wg67-62q3-2m33"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88866"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wwbn-avideo-logincontrol-stored-xss-via-user-agent-header"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wwbn/avideo","events":[{"introduced":"0"},{"last_affected":"c3edcc274c389816d434acadac07ee78eaf330c1"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"0"},{"last_affected":"c3edcc274c389816d434acadac07ee78eaf330c1"}],"source":"AFFECTED_FIELD"},{"range":[{"introduced":"0"},{"last_affected":"c3edcc274c389816d434acadac07ee78eaf330c1"}],"source":"DESCRIPTION"}]}}],"versions":["29.0","26.0","25.0","24.0","22.0","21.0","18.0","14.3.1","14.3","12.4","11.6","11.5","11.1.1","11.1","11","10.8","8.9.1","8.9","8.7","8.6","8.5","8.1","7.8","7.7","7.6","7.4","7.3","7.2","4.0","3.4","2.7","2.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88866.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:H/SI:H/SA:N"}]}