CVE-2025-61676— October CMS Vulnerable to Stored XSS via Branding Styles
Quick assessment
Affected
octobercms october
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
October CMS是October CMS公司的一套基于PHP和Laravel Web应用程序框架的开源内容管理系统（CMS）。 October CMS 3.7.13之前版本和4.0.12之前版本存在跨站脚本漏洞，该漏洞源于后端配置表单中清理和转义不足，可能导致跨站脚本攻击。
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I. Basic Information for CVE-2025-61676
Vulnerability Information
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Vulnerability Title
October CMS Vulnerable to Stored XSS via Branding Styles
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
October CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
October CMS是October CMS公司的一套基于PHP和Laravel Web应用程序框架的开源内容管理系统（CMS）。 October CMS 3.7.13之前版本和4.0.12之前版本存在跨站脚本漏洞，该漏洞源于后端配置表单中清理和转义不足，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| octobercms | october | >= 4.0.0, < 4.0.12 | - |
|
II. Public POCs for CVE-2025-61676
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: october
-
CVE-2026-49400
October CMS: PHP Object Injection via Backend Widget Session -
CVE-2026-29179
October: Editor Sub-Permission Bypass for Asset and Blueprin -
CVE-2026-27937
October: Reflected XSS via DataTable Form Widget -
CVE-2026-26274
October: Safe Mode Bypass via Twig Database Write Operations -
CVE-2026-26067
October: Safe Mode Bypass via CSS Preprocessor Compilers
Same vendor: octobercms
-
CVE-2026-49400
October CMS: PHP Object Injection via Backend Widget Session -
CVE-2026-46696
October CMS: Safe Mode Sandbox Bypass via Session Store and -
CVE-2026-29179
October: Editor Sub-Permission Bypass for Asset and Blueprin -
CVE-2026-27937
October: Reflected XSS via DataTable Form Widget -
CVE-2026-26274
October: Safe Mode Bypass via Twig Database Write Operations
Same weakness: CWE-79
-
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WordPress Kids Planet theme <= 2.2.14.2 - Cross Site Scripti -
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WordPress LMS theme <= 8.3 - Cross Site Scripting (XSS) vuln -
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WordPress KuteShop theme <= 4.2.9 - Reflected Cross Site Scr
V. Comments for CVE-2025-61676
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