CVE-2026-75004: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could lead to managesieve_disabled_actions setting bypass via a crafted…

PriorityP424medium4.3CVSS 3.1

AVNACLPRLUINSUCNILAN

EPSS

0.29%

21.2th percentile

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could lead to managesieve_disabled_actions setting bypass via a crafted rule name in a Sieve script. This issue only affects Roundcube instances using the managesieve plugin.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
roundcube	webmail	>= 1.6.0 < 1.6.18	1.6.18
roundcube	webmail	>= 1.7.0 < 1.7.3	1.7.3

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