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I. Basic Information for CVE-2026-40074
Vulnerability Information

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Vulnerability Title
SvelteKit's invalidated redirect in handle hook causes Denial-of-Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.57.1, redirect, when called from inside the handle server hook with a location parameter containing characters that are invalid in a HTTP header, will cause an unhandled TypeError. This could result in DoS on some platforms, especially if the location passed to redirect contains unsanitized user input. This vulnerability is fixed in 2.57.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对异常条件的处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
SvelteKit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SvelteKit是Svelte开源的一套Web 开发框架。 SvelteKit 2.57.1之前版本存在安全漏洞,该漏洞源于handle服务器钩子中redirect函数处理不当,可能导致拒绝服务攻击。
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
sveltejskit < 2.57.1 -
II. Public POCs for CVE-2026-40074
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III. Intelligence Information for CVE-2026-40074
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