CVE-2026-74997In 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.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Roundcube Webmail roundcube:webmail (from the name) | from 1.6.0 before 1.6.18; from 1.7.0 before 1.7.3 | CNA record |
roundcube webmail roundcube:webmail | from 1.6.0 before 1.6.18; from 1.7.0 before 1.7.3 | NVD |
References
- https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3vendor-advisory
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.18release-notes
- https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cdpatch
- https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2apatch
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.3release-notes
- https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.