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.
History

Tue, 20 Jan 2026 16:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*

Mon, 12 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 12 Jan 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Octobercms
Octobercms october
Vendors & Products Octobercms
Octobercms october

Sat, 10 Jan 2026 03:45:00 +0000

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-01-10T03:14:00.708Z

Updated: 2026-01-12T17:34:13.595Z

Reserved: 2025-09-29T20:25:16.181Z

Link: CVE-2025-61676

cve-icon Vulnrichment

Updated: 2026-01-12T17:34:10.521Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-10T04:16:00.850

Modified: 2026-01-20T16:05:36.343

Link: CVE-2025-61676

cve-icon Redhat

No data.