{"id":"CVE-2020-35730","aliases":["BIT-roundcube-2020-35730"],"url":"https://o3.security/vulnerability/CVE-2020-35730","summary":null,"details":"An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by linkref_addindex in rcube_string_replacer.php.","published":"2020-12-28T20:15:13.150Z","modified":"2026-10-20T10:54:20.220341205Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.32688,"percentile":0.9824,"asOf":"2026-09-11"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://roundcube.net/download/"},{"type":"WEB","url":"https://www.alexbirnberg.com/roundcube-xss.html"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-35730"},{"type":"ADVISORY","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.2.13"},{"type":"ADVISORY","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.3.16"},{"type":"ADVISORY","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.4.10"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCEU4BM5WGIDJWP6Z4PCH62ZMH57QYM2/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HMLIZWKMTRCLU7KZLEQHELS4INXJ7X5Q/"},{"type":"REPORT","url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978491"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/compare/1.4.9...1.4.10"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:54:20.220341205Z"}}