CVE-2026-75004

MediumCVSS 4.3/10Last modified Sep 8, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-77

Affected software

Vendor	Product	Versions
Roundcube	Webmail	>= 1.6.0, < 1.6.18; >= 1.7.0, < 1.7.3

References

https://github.com/roundcube/roundcubemail/releases/tag/1.6.18Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3Release Notes
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3Vendor Advisory

Timeline

Published: Aug 17, 2026
Last modified: Sep 8, 2026
NVD status: Analyzed

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