CVE-2025-65961— Contao is vulnerable to cross-site scripting in templates
Quick assessment
Affected
contao contao
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.
Contao是Contao开源的一套采用PHP开发的开源内容管理系统（CMS）。该系统支持搜索引擎、权限管理和CSS框架等。 Contao 4.0.0版本至4.13.57之前版本、5.3.42之前版本和5.6.5之前版本存在安全漏洞，该漏洞源于可注入代码到模板输出，可能导致代码执行。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-65961
Vulnerability Information
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Vulnerability Title
Contao is vulnerable to cross-site scripting in templates
Source: CVE Program / CVE List V5
Vulnerability Description
Contao is an Open Source CMS. From version 4.0.0 to before 4.13.57, before 5.3.42, and before 5.6.5, it is possible to inject code into the template output that will be executed in the browser in the front end and back end. This issue has been patched in versions 4.13.57, 5.3.42, and 5.6.5. A workaround for this issue involves not using the affected templates or patch them manually.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
替代XSS语法转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Contao 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Contao是Contao开源的一套采用PHP开发的开源内容管理系统（CMS）。该系统支持搜索引擎、权限管理和CSS框架等。 Contao 4.0.0版本至4.13.57之前版本、5.3.42之前版本和5.6.5之前版本存在安全漏洞，该漏洞源于可注入代码到模板输出，可能导致代码执行。
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
II. Public POCs for CVE-2025-65961
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-65961 (1)
IV. Related Vulnerabilities
Same product: contao
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CVE-2026-55825
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CVE-2026-55824
Contao crawler leaks auth credentials to external hosts -
CVE-2026-57232
Contao: Server-Side Request Forgery (SSRF) via Unvalidated R -
CVE-2025-65960
Contao is vulnerable to remote code execution in template cl -
CVE-2025-57759
Contao has improper privilege management for page and articl
Same vendor: contao
-
CVE-2026-55825
Contao: Possible path traversal in job download URIs -
CVE-2026-55824
Contao crawler leaks auth credentials to external hosts -
CVE-2026-57232
Contao: Server-Side Request Forgery (SSRF) via Unvalidated R -
CVE-2025-65960
Contao is vulnerable to remote code execution in template cl -
CVE-2025-57759
Contao has improper privilege management for page and articl
Same weakness: CWE-87
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CVE-2026-79946
Dell Secure Connect Gateway 跨站脚本漏洞 -
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Apache Answer: XSS in AI Answer Rendering -
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Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhoo -
CVE-2026-42458
Magento LTS: Reflected XSS - Import -> Data Flow (profiles)
V. Comments for CVE-2025-65961
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