low3.7
CVE-2026-35537
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | roundcube/roundcubemail | >= 1.7-beta, < 1.7-rc5 | 1.7-rc5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Roundcube | Webmail | before 1.5.14 from 1.6.0 before 1.6.14 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-rxj3-rrwm-pj4r
- https://nvd.nist.gov/vuln/detail/CVE-2026-35537
- https://github.com/roundcube/roundcubemail/commit/618c5428edc69fb088e7ac6c89e506dd39df3
- https://github.com/roundcube/roundcubemail/commit/6d586cfa4d8a31f7957f7a445aaedd52592a0e74
- https://github.com/roundcube/roundcubemail/commit/a4ead994d2f0ea92e4a1603196a197e0d5df1620
- 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
- https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
- http://www.openwall.com/lists/oss-security/2026/04/11/6