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 rule name in a Sieve script. This issue only affects Roundcube instances using the managesieve plugin.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:roundcube:webmail::::::::
	cpe:2.3:a:roundcube:webmail::::::::

History

No history.

Information

Published : 2026-08-17 13:16

Updated : 2026-09-08 18:46

NVD link : CVE-2026-75004

Mitre link : CVE-2026-75004

CVE.ORG link : CVE-2026-75004

JSON object : View

Products Affected

roundcube

webmail

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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