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I. Basic Information for CVE-2026-28499
Vulnerability Information

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Vulnerability Title
LeafKit's HTML escaping may be skipped for Collection values, enabling XSS
Source: NVD (National Vulnerability Database)
Vulnerability Description
LeafKit is a templating language with Swift-inspired syntax. Prior to version 1.14.2, HTML escaping doesn't work correctly when a template prints a collection (Array / Dictionary) via `#(value)`. This can result in XSS, allowing potentially untrusted input to be rendered unescaped. Version 1.14.2 fixes the issue.
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
leafkit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
leafkit是Vapor开源的一个应用软件。使用 Swift 创建模块化服务器端软件。 leafkit 1.14.2之前版本存在安全漏洞,该漏洞源于通过#(value)打印集合时HTML转义不正确,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
VendorProductAffected VersionsCPESubscribe
vaporleaf-kit < 1.14.2 -
II. Public POCs for CVE-2026-28499
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III. Intelligence Information for CVE-2026-28499
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IV. Related Vulnerabilities
V. Comments for CVE-2026-28499

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