CVE-2025-61676

October CMS Vulnerable to Stored XSS via Branding Styles

Published Jan 10, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
October is a Content Management System (CMS) and web platform. Prior to versions 3.7.13 and 4.0.12, a cross-site scripting (XSS) vulnerabilities was identified in October CMS backend configuration forms. A user with the Customize Backend Styles permission could inject malicious HTML/JS into the stylesheet input at Styles from Branding & Appearance settings. A specially crafted input could break out of the intended <style> context, allowing arbitrary script execution across backend pages for all users. This issue has been patched in versions 3.7.13 and 4.0.12.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-wvpq-h33f-8rp6 October CMS Vulnerable to Stored XSS via Branding Styles
History
Type Values Removed Values Added
CPEs cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Octobercms
Octobercms october
Vendors & Products Octobercms
Octobercms october
Type Values Removed Values Added
Description October is a Content Management System (CMS) and web platform. Prior to versions 3.7.13 and 4.0.12, a cross-site scripting (XSS) vulnerabilities was identified in October CMS backend configuration forms. A user with the Customize Backend Styles permission could inject malicious HTML/JS into the stylesheet input at Styles from Branding & Appearance settings. A specially crafted input could break out of the intended <style> context, allowing arbitrary script execution across backend pages for all users. This issue has been patched in versions 3.7.13 and 4.0.12.
Title October CMS Vulnerable to Stored XSS via Branding Styles
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jan 12, 2026, 5:34 PM
Reserved
Sep 29, 2025, 8:25 PM
Status
Analyzed
Published
Jan 10, 2026, 4:16 AM
Modified
Jun 17, 2026, 9:50 AM