CVE-2026-114732

roundcubemail: roundcubemail: Unauthorized account access via alias login in multi-host environments

Published Oct 22, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identity records without qualifying the lookup by IMAP host, so a login could be resolved to a user account belonging to a different IMAP host. Upstream fixed this in the commit “Fix bug where an alias login wasn’t qualified by IMAP host”.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6579-1 roundcube security update
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title roundcubemail: roundcubemail: Unauthorized account access via alias login in multi-host environments
Weaknesses CWE-303
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Description Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an improper authentication vulnerability in multi-host installations. When a user logs in with an alias address, rcube_user::query() matched the address against identity records without qualifying the lookup by IMAP host, so a login could be resolved to a user account belonging to a different IMAP host. Upstream fixed this in the commit “Fix bug where an alias login wasn’t qualified by IMAP host”.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-288
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 29, 2026, 10:57 AM
Reserved
Oct 22, 2026, 2:16 AM
Status
Analyzed
Published
Oct 22, 2026, 3:16 AM
Modified
Nov 4, 2026, 1:41 AM
Severity
Moderate
Public date
Oct 22, 2026, 2:16 AM