{"id":"CVE-2026-74997","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74997","summary":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values.…","details":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmd_learn driver.","published":"2026-08-17T13:16:54.100","modified":"2026-08-17T13:16:54.100","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c","label":"roundcube/roundcubemail@14044f8"},"references":[{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2a"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cd"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.18"},{"type":"WEB","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.3"},{"type":"WEB","url":"https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-17T13:16:54.100"}}