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CVE-2026-44577— Next.js: Denial of Service in the Image Optimization API

Quick assessment

Affected
vercel next.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Next.js是Vercel开源的一个 React 框架。 Next.js 10.0.0至15.5.16之前版本和16.2.5之前版本存在安全漏洞，该漏洞源于默认图像加载器自托管时，Image Optimization API将本地图像完全加载到内存中而未强制执行最大大小限制，可能导致内存耗尽。

CVSS 5.9 · Medium EPSS 0.94% · P60

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
vercel next.js >= 10.0.0, < 15.5.16 affected
>= 16.0.0, < 16.2.5 affected
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I. Basic Information for CVE-2026-44577

Vulnerability Information
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Vulnerability Title
Next.js: Denial of Service in the Image Optimization API
Source: CVE Program / CVE List V5
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From 10.0.0 to before 15.5.16 and 16.2.5, when self-hosting Next.js with the default image loader, the Image Optimization API fetches local images entirely into memory without enforcing a maximum size limit. An attacker could cause out-of-memory conditions by requesting large local assets from the /_next/image endpoint that match the images.localPatterns configuration (by default, all patterns are allowed). This vulnerability is fixed in 15.5.16 and 16.2.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
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 10.0.0至15.5.16之前版本和16.2.5之前版本存在安全漏洞，该漏洞源于默认图像加载器自托管时，Image Optimization API将本地图像完全加载到内存中而未强制执行最大大小限制，可能导致内存耗尽。
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

Vendor Product Affected Versions CPE Subscribe
vercel next.js >= 10.0.0, < 15.5.16 -

II. Public POCs for CVE-2026-44577

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III. Intelligence Information for CVE-2026-44577

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Vendor Advisories for CVE-2026-44577 (1)

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

CVE-2026-44578 8.6 HIGH Next.js: Server-side request forgery in applications using WebSocket upgrades
CVE-2026-44574 8.1 HIGH Next.js: Middleware / Proxy bypass through dynamic route parameter injection
CVE-2026-45109 7.5 HIGH Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
CVE-2026-44579 7.5 HIGH Next.js: Denial of Service via connection exhaustion in applications using Cache Component
CVE-2026-44575 7.5 HIGH Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
CVE-2026-44573 7.5 HIGH Next.js: Middleware / Proxy bypass in Pages Router applications using i18n
CVE-2026-44580 6.1 MEDIUM Next.js: Cross-site scripting in beforeInteractive scripts with untrusted input
CVE-2026-44479 5.5 MEDIUM Vercel: Non-interactive mode includes CLI arguments in suggested command output
CVE-2026-44576 5.4 MEDIUM Next.js: Cache poisoning in React Server Component responses
CVE-2026-44581 4.7 MEDIUM Next.js: Cross-site scripting in App Router applications using CSP nonces
CVE-2026-44572 3.7 LOW Next.js: Middleware / Proxy redirects can be cache-poisoned
CVE-2026-44582 3.7 LOW Next.js: Cache poisoning via collisions in React Server Component cache-busting

IV. Related Vulnerabilities

Same product: next.js
Same vendor: vercel
Same weakness: CWE-770

V. Comments for CVE-2026-44577

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