{"id":"CVE-2026-114722","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-114722","generatedAt":"2026-10-28T01:02:31.698Z","title":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcube_utils::mod_css_styles() did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning…","description":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcube_utils::mod_css_styles() did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were left unscoped and applied to the whole Roundcube interface instead of being confined to the message body. This allows an HTML message to restyle application chrome for UI redressing and spoofing. Upstream fixed this in the commit “Fix CSS scoping bypass in HTML messages using at-rules”.","published":"2026-10-22T02:17:00.000Z","lastModified":"2026-10-22T16:45:50.000Z","status":"Undergoing Analysis","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"cwe":["CWE-669"],"affected":[],"epss":{"score":0.00252,"percentile":0.16569,"date":"2026-10-26","history":[{"date":"2026-10-22","score":0.00252,"percentile":0.15756}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-22T02:17:00.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-22T02:17:00.033Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://bugs.debian.org/1151279","source":"cve@mitre.org"},{"url":"https://github.com/roundcube/roundcubemail/commit/95b81ae12e2819a9b7e8636b5859b6244cda383e","source":"cve@mitre.org"},{"url":"https://github.com/roundcube/roundcubemail/commit/ff9cf4a9bf3b7c66db9afe43fe5f1cc73b47ed35","source":"cve@mitre.org"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20","source":"cve@mitre.org"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5","source":"cve@mitre.org"},{"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5","source":"cve@mitre.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-114722","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}