Vulnerability Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcube_session::unserialize(). A session key prefixed with “!” was treated as having no value, and the reconstructed serialized string was emitted with a key but no corresponding value, desynchronizing the remainder of the input so that following session data was interpreted as a serialized value. This yields a PHP object injection primitive for an attacker able to influence stored session data. Upstream fixed this in the commit “Fix object injection primitive in rcube_session::unserialize() via “!”-prefixed session keys”, which rejects such keys.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Roundcube | Webmail | >= 1.6.0, < 1.6.20 |
Related Weaknesses (CWE)
References
- https://bugs.debian.org/1151279Third Party AdvisoryMailing List
- https://github.com/roundcube/roundcubemail/commit/833770d3d3c35cfde74cc2614d368fPatch
- https://github.com/roundcube/roundcubemail/commit/93284f3f0e13f99af37fc3b81861e1Patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5Release Notes
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5Issue Tracking
FAQ
What is CVE-2026-114724?
CVE-2026-114724 is a vulnerability with a CVSS score of 7.4 (HIGH). Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcube_session::unserialize(). A session key prefixed with “!” was treated as having no value, and the r...
How severe is CVE-2026-114724?
CVE-2026-114724 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114724?
Check the references section above for vendor advisories and patch information. Affected products include: Roundcube Webmail.