GHSA-rxj3-rrwm-pj4rlow3.7
Roundcube Webmail: Unsafe deserialization in the redis/memcache session handler
Impact
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.
Source excerpt · OSVAffected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
roundcube/roundcubemail Packagist
| Affected range | Recorded fix |
|---|---|
| From 1.7-beta before 1.7-rc5Ecosystem versions | 1.7-rc5 |
Version evidence: OSV · GHSA-rxj3-rrwm-pj4r
View original version evidence (6 explicit versions)
Original source 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.
References
- Security advisory nvd.nist.gov/vuln/detail/CVE-2026-35537
- Patch github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506dd39df3
- Patch github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd52592a0e74
- Patch github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197e0d5df1620
- Source reference github.com/roundcube/roundcubemail
- Release notes github.com/roundcube/roundcubemail/releases/tag/1.5.14
- Release notes github.com/roundcube/roundcubemail/releases/tag/1.6.14
- Release notes github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
- Security advisory roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
- Security advisory www.openwall.com/lists/oss-security/2026/04/11/6