CVE-2026-35537: Roundcube Webmail: Unsafe deserialization in the redis/memcache session handler
(updated )
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.
References
- github.com/advisories/GHSA-rxj3-rrwm-pj4r
- github.com/roundcube/roundcubemail
- github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506dd39df3
- github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd52592a0e74
- github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197e0d5df1620
- github.com/roundcube/roundcubemail/releases/tag/1.5.14
- github.com/roundcube/roundcubemail/releases/tag/1.6.14
- github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
- nvd.nist.gov/vuln/detail/CVE-2026-35537
- roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
Code Behaviors & Features
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