{"id":"CVE-2025-66376","aliases":[],"url":"https://o3.security/vulnerability/CVE-2025-66376","summary":null,"details":"Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.","published":"2026-01-05T00:00:00Z","modified":"2026-10-25T02:45:12.679461788Z","cvss":{"score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"epss":{"score":0.19559,"percentile":0.97227,"asOf":"2026-09-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://wiki.zimbra.com/wiki/Security_Center"},{"type":"WEB","url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.0.18#Security_Fixes"},{"type":"WEB","url":"https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.13#Security_Fixes"},{"type":"WEB","url":"https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy"},{"type":"WEB","url":"https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66376"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66376.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66376"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-25T02:45:12.679461788Z"}}