{"id":"CVE-2026-74997","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.","modified":"2026-08-19T03:49:01.250317908Z","published":"2026-08-17T12:37:45.126Z","database_specific":{"cna_assigner":"mitre","cwe_ids":["CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74997.json"},"references":[{"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"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74997.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74997"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2a"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cd"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/roundcube/roundcubemail","events":[{"introduced":"993b888afe29c383bf45c84f17090f4db96367ba"},{"fixed":"4a2bb87d9ea93578acb9bb03599abf754c33a33f"},{"introduced":"df9effa186f81d676962b941da4ebab5e05c3088"},{"fixed":"8473c30fd06f1aa4cfe4304ec54f54aef3b45abe"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.6.0"},{"fixed":"1.6.18"},{"introduced":"1.7.0"},{"fixed":"1.7.3"}]}}],"versions":["1.6.17","1.7.2","1.6.16","1.7.1","1.7.0","1.6.15","1.6.14","1.6.13","1.6.12","1.6.11","1.6.10","1.6.9","1.6.8","1.6.7","1.6.6","1.6.5","1.6.4","1.6.3","1.6.2","1.6.1","1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74997.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}