Description
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 products
roundcube: webmail
References3
- roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3 Vendor Advisory
- github.com/roundcube/roundcubemail/releases/tag/1.6.18 Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.7.3 Release Notes
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 20 · as of 11 November 2026
- CWE
- CWE-77
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