Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Roundcube Webmail
Default version status: unaffected
1.6.0 to < 1.6.18affected1.7.0 to < 1.7.3affected
References
- https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 ↗
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 ↗
- https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cd ↗
- https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2a ↗
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 ↗
- https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c ↗