CVE-2026-74999

Stored XSS in Roundcube Add to Address Book

Published Aug 17, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the "Add to address book" action was subject to stored XSS.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-4760-1 roundcube security update
Debian DSA Debian DSA DSA-6479-1 roundcube security update
History
Type Values Removed Values Added
Title Stored XSS in Roundcube Add to Address Book
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the "Add to address book" action was subject to stored XSS.
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': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 17, 2026, 2:33 PM
Reserved
Aug 17, 2026, 12:42 PM
Status
Analyzed
Published
Aug 17, 2026, 1:16 PM
Modified
Sep 8, 2026, 7:10 PM