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Vulnerability Details CVE-2026-64644

Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and 16.0.0 through 16.2.10, when self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured (not enabled by default). If those images contain malicious content, they can cause CPU exhaustion in /_next/image endpoints.Only config.images.remotePatterns is affected, and just the patterns in that array, whereas config.images.unoptimized: true, config.images.loader: 'custom', and Vercel are not impacted. This issue has been fixed in versions 15.5.21 and 16.2.11.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 41.8%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-64644
  • Vercel » Next.js » Version: 15.5.0
    cpe:2.3:a:vercel:next.js:15.5.0
  • Vercel » Next.js » Version: 15.5.1
    cpe:2.3:a:vercel:next.js:15.5.1
  • Vercel » Next.js » Version: 15.5.10
    cpe:2.3:a:vercel:next.js:15.5.10
  • Vercel » Next.js » Version: 15.5.11
    cpe:2.3:a:vercel:next.js:15.5.11
  • Vercel » Next.js » Version: 15.5.12
    cpe:2.3:a:vercel:next.js:15.5.12
  • Vercel » Next.js » Version: 15.5.13
    cpe:2.3:a:vercel:next.js:15.5.13
  • Vercel » Next.js » Version: 15.5.14
    cpe:2.3:a:vercel:next.js:15.5.14
  • Vercel » Next.js » Version: 15.5.15
    cpe:2.3:a:vercel:next.js:15.5.15
  • Vercel » Next.js » Version: 15.5.16
    cpe:2.3:a:vercel:next.js:15.5.16
  • Vercel » Next.js » Version: 15.5.17
    cpe:2.3:a:vercel:next.js:15.5.17
  • Vercel » Next.js » Version: 15.5.18
    cpe:2.3:a:vercel:next.js:15.5.18
  • Vercel » Next.js » Version: 15.5.19
    cpe:2.3:a:vercel:next.js:15.5.19
  • Vercel » Next.js » Version: 15.5.2
    cpe:2.3:a:vercel:next.js:15.5.2
  • Vercel » Next.js » Version: 15.5.20
    cpe:2.3:a:vercel:next.js:15.5.20
  • Vercel » Next.js » Version: 15.5.3
    cpe:2.3:a:vercel:next.js:15.5.3
  • Vercel » Next.js » Version: 15.5.4
    cpe:2.3:a:vercel:next.js:15.5.4
  • Vercel » Next.js » Version: 15.5.5
    cpe:2.3:a:vercel:next.js:15.5.5
  • Vercel » Next.js » Version: 15.5.6
    cpe:2.3:a:vercel:next.js:15.5.6
  • Vercel » Next.js » Version: 15.5.7
    cpe:2.3:a:vercel:next.js:15.5.7
  • Vercel » Next.js » Version: 15.5.8
    cpe:2.3:a:vercel:next.js:15.5.8
  • Vercel » Next.js » Version: 15.5.9
    cpe:2.3:a:vercel:next.js:15.5.9


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