漏洞信息
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Vulnerability Title
PostCSS has XSS via Unescaped </style> in its CSS Stringify Output
Vulnerability Description
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape `</style>` sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML `<style>` tags, `</style>` in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Vulnerability Title
PostCSS 跨站脚本漏洞
Vulnerability Description
PostCSS是PostCSS开源的一个样式转换工具。 PostCSS 8.5.10之前版本存在跨站脚本漏洞,该漏洞源于在字符串化CSS AST时未转义</style>序列,可能导致用户提交的CSS被解析并重新字符串化以嵌入HTML<style>标签时,CSS值中的</style>跳出样式环境,从而引发跨站脚本攻击。
CVSS Information
N/A
Vulnerability Type
N/A