{"id":"CVE-2026-114717","title":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment","summary":"Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment n…","severity":"medium","cvss":4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-99"],"vendor":"Roundcube","product":"Webmail","affected":["Webmail >= 1.6.0 < 1.6.20","Webmail >= 1.7.0 < 1.7.5"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T01:21:14.794Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114717","references":[{"url":"https://bugs.debian.org/1151279"},{"url":"https://github.com/roundcube/roundcubemail/commit/4c3291ce9df9e1d3b45330d0854d65cd8efbeee9"},{"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"},{"url":"https://github.com/roundcube/roundcubemail/commit/c325953a251d0132f1909569b3eac0b974095dd4"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T02:23:25.216Z","slug":"CVE-2026-114717","body":"## Overview\n\nRoundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment name, so a received message whose subject contains CRLF sequences could inject arbitrary MIME part headers into the outgoing message. Upstream fixed this in the commit “Fix mail header injection via subject of a message forwarded as attachment”, which collapses whitespace in the generated name.\n\n## Affected\n\n- `Webmail >= 1.6.0 < 1.6.20`\n- `Webmail >= 1.7.0 < 1.7.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":22,"depthScoreParts":{"impact":22,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}