CVE-2026-54432

Published Jul 14, 2026 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Description
Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting (XSS). The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4693-1 roundcube security update
Debian DSA Debian DSA DSA-6391-1 roundcube security update
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Stored XSS in Roundcube Webmail via Unescaped MIME Type
Type Values Removed Values Added
Title Stored XSS in Roundcube Webmail via Unescaped MIME Type
Type Values Removed Values Added
Title Stored Cross‑Site Scripting via Unescaped MIME Type in Roundcube Webmail
Type Values Removed Values Added
Title Stored Cross‑Site Scripting via Unescaped MIME Type in Roundcube Webmail
Type Values Removed Values Added
Title Stored XSS via Unescaped MIME Type on Attachment Validation in Roundcube Webmail
Type Values Removed Values Added
Title Stored XSS via Unescaped MIME Type on Attachment Validation in Roundcube Webmail
Type Values Removed Values Added
Description Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting (XSS). The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page.
First Time appeared Roundcube
Roundcube webmail
Weaknesses CWE-79
CPEs cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
Vendors & Products Roundcube
Roundcube webmail
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 15, 2026, 3:13 PM
Reserved
Jun 15, 2026, 1:27 PM
Status
Awaiting Analysis
Published
Jul 14, 2026, 5:17 PM
Modified
Oct 24, 2026, 9:10 PM