Vulnerability DatabaseCVE-2026-75004
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CVE-2026-75004
Published:August 17, 2026
Updated:September 01, 2026
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 Packages
roundcube/roundcubemail (PHP):
Affected version(s) >=1.7.0 <1.7.3
Fix Suggestion:
Update to version 1.7.3
Related Resources (5)
https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
https://github.com/roundcube/roundcubemail/releases/tag/1.7.3
https://github.com/roundcube/roundcubemail/releases/tag/1.6.18
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75004.json
https://nvd.nist.gov/vuln/detail/CVE-2026-75004
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-77
EPSS
Base Score:
0.29