CVE-2026-35537

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 Platforms

Weakness Type

CWE-502

References

• https://github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506…
• https://github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd…
• https://github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197…
• https://github.com/roundcube/roundcubemail/releases/tag/1.5.14
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
• https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5