Cross-Site Scripting Vulnerability in October CMS Backend Configuration
CVE-2025-61674

6.1MEDIUM

Key Information:

Vendor

Octobercms

Status
October
Vendor
CVE Published:
10 January 2026

What is CVE-2025-61674?

October CMS has revealed a cross-site scripting vulnerability in its backend configuration forms. This issue allows users with Global Editor Settings permission to inject malicious HTML or JavaScript into the stylesheet input in Markup Styles. The vulnerability permits the crafted input to escape the intended context, leading to arbitrary script execution across backend pages for all users. This critical security issue has been resolved in versions 3.7.13 and 4.0.12.

Affected Version(s)

october >= 4.0.0, < 4.0.12 < 4.0.0, 4.0.12

october < 3.7.13 < 3.7.13

References

https://github.com/octobercms/october/security/advisories...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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