CVE Tools
Sign in

CVE-2025-61676

October CMS Vulnerable to Stored XSS via Branding Styles

Published: Jan 10, 2026Updated: Jan 20, 2026 Sources: CVE List NVD GHSACWE-79
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
0.2%
Top 92.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

octoberoctobercms
On-premWeb App
Web & CMS Plugins / cms-core
october/systemPackagistOSS Libraries
octobercmsoss-projectWeb & CMS Pluginsaka ckeditor4, ckeditor5
packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/octobercms/october/security/advisories/GHSA-wvpq-h33f-8rp6
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-61676
nvd.nist.gov
https://github.com/octobercms/october
github.com

Timeline

Published
Jan 10, 2026
Last Updated
Jan 20, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-61676 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows