CVE-2025-49826— Next.js DoS vulnerability via cache poisoning
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I. Basic Information for CVE-2025-49826
Vulnerability Information
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Vulnerability Title
Next.js DoS vulnerability via cache poisoning
Source: NVD (National Vulnerability Database)
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page. This issue has been addressed in version 15.1.8.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Next.js 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Next.js是Vercel开源的一个 React 框架。 Next.js 15.0.4-canary.51至15.1.8之前版本存在安全漏洞，该漏洞源于缓存污染漏洞，可能导致拒绝服务。
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
II. Public POCs for CVE-2025-49826
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IV. Related Vulnerabilities
Same product: next.js
- CVE-2026-29057
Next.js: HTTP request smuggling in rewrites - CVE-2026-27980
Next.js: Unbounded next/image disk cache growth can exhaust - CVE-2026-27979
Next.js: Unbounded postponed resume buffering can lead to Do - CVE-2026-27978
Next.js: null origin can bypass Server Actions CSRF checks - CVE-2026-27977
Next.js: null origin can bypass dev HMR websocket CSRF check
Same vendor: vercel
- CVE-2026-29057
Next.js: HTTP request smuggling in rewrites - CVE-2026-27980
Next.js: Unbounded next/image disk cache growth can exhaust - CVE-2026-27979
Next.js: Unbounded postponed resume buffering can lead to Do - CVE-2026-27978
Next.js: null origin can bypass Server Actions CSRF checks - CVE-2026-27977
Next.js: null origin can bypass dev HMR websocket CSRF check
Same weakness: CWE-444
- CVE-2026-40562
Gazelle versions through 0.49 for Perl allows HTTP Request S - CVE-2026-40561
Starlet versions through 0.31 for Perl allows HTTP Request S - CVE-2026-39805
CL.CL HTTP request smuggling via duplicate Content-Length in - CVE-2026-40560
Starman versions before 0.4018 for Perl allows HTTP Request - CVE-2026-41873
Pony Mail: Admin account takeover via request smuggling
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