roundcube: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14
CVE-2026-35537 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-35537, released April 3, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| roundcube · Debian 12.15 (bookworm) | 1.6.5+dfsg-1+deb12u8 | DEBIAN-CVE-2026-35537 | Apr 3, 2026 |
| roundcube · Debian 13.5 (trixie) | 1.6.15+dfsg-0+deb13u1 | DEBIAN-CVE-2026-35537 | Apr 3, 2026 |
| roundcube · Debian 14 | 1.6.14+dfsg-1 | DEBIAN-CVE-2026-35537 | Apr 3, 2026 |
| roundcubemail · opensuse-leap 16.0 | 1.6.15-bp160.1.1 | OPENSUSE-SU-2026:20586-1 | Apr 17, 2026 |
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