CVE-2026-4257 PoC — WordPress plugin Contact Form by Supsystic 代码注入漏洞

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-4257.yaml

Associated Vulnerability

Title:WordPress plugin Contact Form by Supsystic 代码注入漏洞 (CVE-2026-4257)
Description:WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Contact Form by Supsystic 1.7.36及之前版本存在代码注入漏洞，该漏洞源于使用未沙箱化的Twig模板引擎且未经验证的用户可通过GET参数注入任意Twig表达式，可能导致服务器端模板注入和远

Description

Contact Form by Supsystic WordPress plugin <= 1.7.36 contains a server-side template injection caused by unsandboxed Twig_Loader_String and cfsPreFill functionality, letting unauthenticated attackers execute arbitrary code remotely via GET parameters.

File Snapshot


 id: CVE-2026-4257

info:
  name: WordPress Contact Form by Supsystic - Server-Side Template Injectio

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