Description
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.
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
0 to < 1.5.14affected1.6.0 to < 1.6.14affected
References
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14 ↗
- https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5 ↗
- https://github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd52592a0e74 ↗
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.14 ↗
- https://github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197e0d5df1620 ↗
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.14 ↗
- https://github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506dd39df3 ↗
- http://www.openwall.com/lists/oss-security/2026/04/11/6 ↗