Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-44581— Next.js: Cross-site scripting in App Router applications using CSP nonces

CVSS 4.7 · Medium EPSS 0.04% · P13
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-44581

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Next.js: Cross-site scripting in App Router applications using CSP nonces
Source: NVD (National Vulnerability Database)
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From 13.4.0 to before 15.5.16 and 16.2.5, App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. This vulnerability is fixed in 15.5.16 and 16.2.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
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
Next.js 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Next.js是Vercel开源的一个 React 框架。 Next.js 13.4.0至15.5.16之前版本和16.2.5之前版本存在跨站脚本漏洞，该漏洞源于App Router应用依赖CSP nonce时，格式错误的nonce值从请求头派生并反射到渲染HTML中，可能导致存储型跨站脚本攻击。
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
vercelnext.js >= 13.4.0, < 15.5.16 -

II. Public POCs for CVE-2026-44581

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44581

请登录查看更多情报信息。

Same Patch Batch · vercel · 2026-05-13 · 13 CVEs total

CVE-2026-445788.6 HIGHNext.js: Server-side request forgery in applications using WebSocket upgrades
CVE-2026-445748.1 HIGHNext.js: Middleware / Proxy bypass through dynamic route parameter injection
CVE-2026-451097.5 HIGHNext.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
CVE-2026-445797.5 HIGHNext.js: Denial of Service via connection exhaustion in applications using Cache Component
CVE-2026-445757.5 HIGHNext.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
CVE-2026-445737.5 HIGHNext.js: Middleware / Proxy bypass in Pages Router applications using i18n
CVE-2026-445806.1 MEDIUMNext.js: Cross-site scripting in beforeInteractive scripts with untrusted input
CVE-2026-445775.9 MEDIUMNext.js: Denial of Service in the Image Optimization API
CVE-2026-444795.5 MEDIUMVercel: Non-interactive mode includes CLI arguments in suggested command output
CVE-2026-445765.4 MEDIUMNext.js: Cache poisoning in React Server Component responses
CVE-2026-445723.7 LOWNext.js: Middleware / Proxy redirects can be cache-poisoned
CVE-2026-445823.7 LOWNext.js: Cache poisoning via collisions in React Server Component cache-busting

IV. Related Vulnerabilities

Same product: next.js
Same vendor: vercel
Same weakness: CWE-79

V. Comments for CVE-2026-44581

No comments yet

Leave a comment