{"id":"CVE-2026-66092","title":"Stored XSS in pre-login notice via reachable legacy logon route","summary":"In openEQUELLA before 2026.2, the pre-login notice is stored as HTML and rendered on the legacy logon page without encoding or sanitisation. A user holding the EDIT_SYSTEM_SETTINGS permission can set a notice containing an arbitrary scri…","severity":"medium","cvss":4.8,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"Apereo Foundation","product":"openEQUELLA","affected":["openEQUELLA >= 2019.1 < 2026.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-29T01:50:05.964473Z"},"published":"2026-10-29","updated":"2026-10-29","sourceUpdated":"2026-10-29T02:02:12.981Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66092","references":[{"url":"https://github.com/openequella/openEQUELLA/security/advisories/GHSA-9jhj-7h37-3j2c"},{"url":"https://openequella.github.io/guides/"}],"tags":["cve.org"],"epss":0.00326,"epssPercentile":0.25726,"ingestedAt":"2026-10-31T01:14:13.028Z","slug":"CVE-2026-66092","body":"## Overview\n\nIn openEQUELLA before 2026.2, the pre-login notice is stored as HTML and rendered on the legacy logon page without encoding or sanitisation. A user holding the EDIT_SYSTEM_SETTINGS permission can set a notice containing an arbitrary script (PUT /api/preloginnotice), resulting in stored cross-site scripting on the login page. Unauthenticated exploitation is possible where EDIT_SYSTEM_SETTINGS has been granted to the guest user or Everyone\n\n## Affected\n\n- `openEQUELLA >= 2019.1 < 2026.2`\n\n## Remediation\n\nUpdate to vendor recommended versions","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}