CVE-2025-61676 — Cross-site Scripting in October

CWE-79 — Cross-site Scripting4 documents4 sources
Severity
4.8MEDIUMNVD
EPSS
0.1%
top 84.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Octobercms OctoberOctober System
Timeline
Latest updateJan 9
PublishedJan 10

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 context, allowing arbitrary script execution across backend pages for all users. T…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NExploitability: 1.7 | Impact: 2.7

Affected Packages3 packages

▶Packagistoctober/system4.0.0 — 4.0.12+1
▶NVDoctobercms/october4.0.0 — 4.0.12+1
▶CVEListV5octobercms/october>= 4.0.0, < 4.0.12

Patches

Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
October CMS Vulnerable to Stored XSS via Branding Styles↗2026-01-09
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OSV
October CMS Vulnerable to Stored XSS via Branding Styles↗2026-01-09
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🕵️Threat Intelligence

1
Wiz
CVE-2025-61676 Impact, Exploitability, and Mitigation Steps | Wiz↗
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