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CVE-2026-114724
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.
8.1 HIGHEPSS 0.40%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.1 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 7.4 | HIGH | 3.1mitre (CNA) | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Details
- CVE ID
- CVE-2026-114724
- Status
- Analyzed
- Assigner (CNA)
- mitre
- Published
- Oct 22, 2026
- Last modified
- 2026-10-29 14:31 UTC
- Weaknesses
- CWE-502 · Deserialization of Untrusted Data
Affected Products
As published by the CNA in the CVE record.
RoundcubeWebmail2 version ranges
- 1.6.0 before 1.6.20
- 1.7.0 before 1.7.5
References
- bugs.debian.org https://bugs.debian.org/1151279
- github.com https://github.com/roundcube/roundcubemail/commit/833770d3d3c35cfde74cc2614d368f25a75b6f99
- github.com https://github.com/roundcube/roundcubemail/commit/93284f3f0e13f99af37fc3b81861e142eea8a922
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.6.20
- github.com https://github.com/roundcube/roundcubemail/releases/tag/1.7.5
- roundcube.net https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5