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I. Basic Information for CVE-2026-33167
Vulnerability Information

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Vulnerability Title
Rails has a possible XSS vulnerability in its Action Pack debug exceptions
Source: NVD (National Vulnerability Database)
Vulnerability Description
Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1 branch prior to 8.1.2.1, the debug exceptions page does not properly escape exception messages. A carefully crafted exception message could inject arbitrary HTML and JavaScript into the page, leading to XSS. This affects applications with detailed exception pages enabled (`config.consider_all_requests_local = true`), which is the default in development. Version 8.1.2.1 contains a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Rails Action Pack 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rails Action Pack是美国Rails团队的一个web框架。提供了路由机制(将请求URL映射到动作),定义实现动作的控制器以及通过渲染视图(各种格式的模板)生成响应的机制。 Rails Action Pack 8.1.2.1之前版本存在跨站脚本漏洞,该漏洞源于调试异常页面未正确转义异常消息,可能导致精心构造的异常消息注入任意HTML和JavaScript,造成跨站脚本攻击。
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
VendorProductAffected VersionsCPESubscribe
railsactionpack >= 8.1.0, < 8.1.2.1 -
II. Public POCs for CVE-2026-33167
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III. Intelligence Information for CVE-2026-33167
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