Deserialization of Untrusted Data Affecting roundcube package, versions <1.6.5+dfsg-1+deb12u8


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.6% (47th percentile)

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  • Snyk IDSNYK-DEBIAN12-ROUNDCUBE-15927659
  • published8 Apr 2026
  • disclosed3 Apr 2026

Introduced: 3 Apr 2026

CVE-2026-35537  (opens in a new tab)
CWE-502  (opens in a new tab)

How to fix?

Upgrade Debian:12 roundcube to version 1.6.5+dfsg-1+deb12u8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream roundcube package and not the roundcube package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1