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I. Basic Information for CVE-2026-27118
Vulnerability Information

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Vulnerability Title
Cache poisoning in @sveltejs/adapter-vercel
Source: NVD (National Vulnerability Database)
Vulnerability Description
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Versions of @sveltejs/adapter-vercel prior to 6.3.2 are vulnerable to cache poisoning. An internal query parameter intended for Incremental Static Regeneration (ISR) is accessible on all routes, allowing an attacker to cause sensitive user-specific responses to be cached and served to other users. Successful exploitation requires a victim to visit an attacker-controlled link while authenticated. Existing deployments are protected by Vercel's WAF, but users should upgrade as soon as possible. This vulnerability is fixed in 6.3.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
源验证错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
SvelteKit 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SvelteKit是Svelte开源的一套Web 开发框架。 SvelteKit 6.3.2之前版本存在访问控制错误漏洞,该漏洞源于内部查询参数可访问,可能导致缓存投毒。
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 < 6.3.2 -
II. Public POCs for CVE-2026-27118
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III. Intelligence Information for CVE-2026-27118
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