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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wvpq-h33f-8rp6 October CMS Vulnerable to Stored XSS via Branding Styles
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

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 : Awaiting Analysis

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

Modified: 2026-01-13T14:03:18.990

Link: CVE-2025-61676

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-12T14:36:43Z

Weaknesses