CVE-2025-61676

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionREQUIRED

Published1/10/2026

Last Modified1/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

octobercms:october

Weaknesses (CWE)

CWE-79

References

https://github.com/octobercms/october/security/advisories/GHSA-wvpq-h33f-8rp6(security-advisories@github.com)

IOC Correlations

No correlations recorded

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