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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-64649

Next.js is a React framework for building full-stack web applications. In versions 14.1.1 through 15.5.20 and 16.0.0 through 16.2.10, when a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host (Server-Side Request Forgery). This requires the attacker's request to control Host-associated headers. In some configurations, it's also possible to obtain internal values that weaken middleware/proxy authorization. Applications that use Server Actions are affected when the incoming host header is not fixed to a trusted value. This typically occurs on custom servers, or on deployments not behind a proxy that pins the host. Managed hosting pins the host upstream and is not affected; next start and standalone output do the same from version 14.2 onward. This issue has been fixed in versions 15.5.21 and 16.2.11.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 46.3%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-64649
  • Vercel » Next.js » Version: 14.1.1
    cpe:2.3:a:vercel:next.js:14.1.1
  • Vercel » Next.js » Version: 14.1.2
    cpe:2.3:a:vercel:next.js:14.1.2
  • Vercel » Next.js » Version: 14.1.3
    cpe:2.3:a:vercel:next.js:14.1.3
  • Vercel » Next.js » Version: 14.1.4
    cpe:2.3:a:vercel:next.js:14.1.4
  • Vercel » Next.js » Version: 14.2.0
    cpe:2.3:a:vercel:next.js:14.2.0
  • Vercel » Next.js » Version: 14.2.1
    cpe:2.3:a:vercel:next.js:14.2.1
  • Vercel » Next.js » Version: 14.2.10
    cpe:2.3:a:vercel:next.js:14.2.10
  • Vercel » Next.js » Version: 14.2.11
    cpe:2.3:a:vercel:next.js:14.2.11
  • Vercel » Next.js » Version: 14.2.12
    cpe:2.3:a:vercel:next.js:14.2.12
  • Vercel » Next.js » Version: 14.2.13
    cpe:2.3:a:vercel:next.js:14.2.13
  • Vercel » Next.js » Version: 14.2.14
    cpe:2.3:a:vercel:next.js:14.2.14
  • Vercel » Next.js » Version: 14.2.15
    cpe:2.3:a:vercel:next.js:14.2.15
  • Vercel » Next.js » Version: 14.2.16
    cpe:2.3:a:vercel:next.js:14.2.16
  • Vercel » Next.js » Version: 14.2.17
    cpe:2.3:a:vercel:next.js:14.2.17
  • Vercel » Next.js » Version: 14.2.18
    cpe:2.3:a:vercel:next.js:14.2.18
  • Vercel » Next.js » Version: 14.2.19
    cpe:2.3:a:vercel:next.js:14.2.19
  • Vercel » Next.js » Version: 14.2.20
    cpe:2.3:a:vercel:next.js:14.2.20
  • Vercel » Next.js » Version: 14.2.21
    cpe:2.3:a:vercel:next.js:14.2.21
  • Vercel » Next.js » Version: 14.2.22
    cpe:2.3:a:vercel:next.js:14.2.22
  • Vercel » Next.js » Version: 14.2.23
    cpe:2.3:a:vercel:next.js:14.2.23
  • Vercel » Next.js » Version: 14.2.24
    cpe:2.3:a:vercel:next.js:14.2.24
  • Vercel » Next.js » Version: 14.2.25
    cpe:2.3:a:vercel:next.js:14.2.25
  • Vercel » Next.js » Version: 14.2.26
    cpe:2.3:a:vercel:next.js:14.2.26
  • Vercel » Next.js » Version: 14.2.27
    cpe:2.3:a:vercel:next.js:14.2.27
  • Vercel » Next.js » Version: 14.2.28
    cpe:2.3:a:vercel:next.js:14.2.28
  • Vercel » Next.js » Version: 14.2.29
    cpe:2.3:a:vercel:next.js:14.2.29
  • Vercel » Next.js » Version: 14.2.3
    cpe:2.3:a:vercel:next.js:14.2.3
  • Vercel » Next.js » Version: 14.2.30
    cpe:2.3:a:vercel:next.js:14.2.30
  • Vercel » Next.js » Version: 14.2.31
    cpe:2.3:a:vercel:next.js:14.2.31
  • Vercel » Next.js » Version: 14.2.32
    cpe:2.3:a:vercel:next.js:14.2.32
  • Vercel » Next.js » Version: 14.2.33
    cpe:2.3:a:vercel:next.js:14.2.33
  • Vercel » Next.js » Version: 14.2.34
    cpe:2.3:a:vercel:next.js:14.2.34
  • Vercel » Next.js » Version: 14.2.35
    cpe:2.3:a:vercel:next.js:14.2.35
  • Vercel » Next.js » Version: 14.2.4
    cpe:2.3:a:vercel:next.js:14.2.4
  • Vercel » Next.js » Version: 14.2.5
    cpe:2.3:a:vercel:next.js:14.2.5
  • Vercel » Next.js » Version: 14.2.6
    cpe:2.3:a:vercel:next.js:14.2.6
  • Vercel » Next.js » Version: 14.2.7
    cpe:2.3:a:vercel:next.js:14.2.7
  • Vercel » Next.js » Version: 14.2.8
    cpe:2.3:a:vercel:next.js:14.2.8
  • Vercel » Next.js » Version: 14.2.9
    cpe:2.3:a:vercel:next.js:14.2.9
  • Vercel » Next.js » Version: 14.3.0
    cpe:2.3:a:vercel:next.js:14.3.0
  • Vercel » Next.js » Version: 15.0.0
    cpe:2.3:a:vercel:next.js:15.0.0
  • Vercel » Next.js » Version: 15.0.1
    cpe:2.3:a:vercel:next.js:15.0.1
  • Vercel » Next.js » Version: 15.0.2
    cpe:2.3:a:vercel:next.js:15.0.2
  • Vercel » Next.js » Version: 15.0.3
    cpe:2.3:a:vercel:next.js:15.0.3
  • Vercel » Next.js » Version: 15.0.4
    cpe:2.3:a:vercel:next.js:15.0.4
  • Vercel » Next.js » Version: 15.0.5
    cpe:2.3:a:vercel:next.js:15.0.5
  • Vercel » Next.js » Version: 15.0.6
    cpe:2.3:a:vercel:next.js:15.0.6
  • Vercel » Next.js » Version: 15.0.7
    cpe:2.3:a:vercel:next.js:15.0.7
  • Vercel » Next.js » Version: 15.1.0
    cpe:2.3:a:vercel:next.js:15.1.0
  • Vercel » Next.js » Version: 15.1.1
    cpe:2.3:a:vercel:next.js:15.1.1
  • Vercel » Next.js » Version: 15.1.10
    cpe:2.3:a:vercel:next.js:15.1.10
  • Vercel » Next.js » Version: 15.1.11
    cpe:2.3:a:vercel:next.js:15.1.11
  • Vercel » Next.js » Version: 15.1.2
    cpe:2.3:a:vercel:next.js:15.1.2
  • Vercel » Next.js » Version: 15.1.3
    cpe:2.3:a:vercel:next.js:15.1.3
  • Vercel » Next.js » Version: 15.1.4
    cpe:2.3:a:vercel:next.js:15.1.4
  • Vercel » Next.js » Version: 15.1.5
    cpe:2.3:a:vercel:next.js:15.1.5
  • Vercel » Next.js » Version: 15.1.6
    cpe:2.3:a:vercel:next.js:15.1.6
  • Vercel » Next.js » Version: 15.1.7
    cpe:2.3:a:vercel:next.js:15.1.7
  • Vercel » Next.js » Version: 15.1.8
    cpe:2.3:a:vercel:next.js:15.1.8
  • Vercel » Next.js » Version: 15.1.9
    cpe:2.3:a:vercel:next.js:15.1.9
  • Vercel » Next.js » Version: 15.2.0
    cpe:2.3:a:vercel:next.js:15.2.0
  • Vercel » Next.js » Version: 15.2.1
    cpe:2.3:a:vercel:next.js:15.2.1
  • Vercel » Next.js » Version: 15.2.2
    cpe:2.3:a:vercel:next.js:15.2.2
  • Vercel » Next.js » Version: 15.2.3
    cpe:2.3:a:vercel:next.js:15.2.3
  • Vercel » Next.js » Version: 15.2.4
    cpe:2.3:a:vercel:next.js:15.2.4
  • Vercel » Next.js » Version: 15.2.5
    cpe:2.3:a:vercel:next.js:15.2.5
  • Vercel » Next.js » Version: 15.2.6
    cpe:2.3:a:vercel:next.js:15.2.6
  • Vercel » Next.js » Version: 15.2.7
    cpe:2.3:a:vercel:next.js:15.2.7
  • Vercel » Next.js » Version: 15.2.8
    cpe:2.3:a:vercel:next.js:15.2.8
  • Vercel » Next.js » Version: 15.3.0
    cpe:2.3:a:vercel:next.js:15.3.0
  • Vercel » Next.js » Version: 15.3.1
    cpe:2.3:a:vercel:next.js:15.3.1
  • Vercel » Next.js » Version: 15.3.2
    cpe:2.3:a:vercel:next.js:15.3.2
  • Vercel » Next.js » Version: 15.3.3
    cpe:2.3:a:vercel:next.js:15.3.3
  • Vercel » Next.js » Version: 15.3.4
    cpe:2.3:a:vercel:next.js:15.3.4
  • Vercel » Next.js » Version: 15.3.5
    cpe:2.3:a:vercel:next.js:15.3.5
  • Vercel » Next.js » Version: 15.3.6
    cpe:2.3:a:vercel:next.js:15.3.6
  • Vercel » Next.js » Version: 15.3.7
    cpe:2.3:a:vercel:next.js:15.3.7
  • Vercel » Next.js » Version: 15.3.8
    cpe:2.3:a:vercel:next.js:15.3.8
  • Vercel » Next.js » Version: 15.4.0
    cpe:2.3:a:vercel:next.js:15.4.0
  • Vercel » Next.js » Version: 15.4.1
    cpe:2.3:a:vercel:next.js:15.4.1
  • Vercel » Next.js » Version: 15.4.10
    cpe:2.3:a:vercel:next.js:15.4.10
  • Vercel » Next.js » Version: 15.4.2
    cpe:2.3:a:vercel:next.js:15.4.2
  • Vercel » Next.js » Version: 15.4.3
    cpe:2.3:a:vercel:next.js:15.4.3
  • Vercel » Next.js » Version: 15.4.4
    cpe:2.3:a:vercel:next.js:15.4.4
  • Vercel » Next.js » Version: 15.4.5
    cpe:2.3:a:vercel:next.js:15.4.5
  • Vercel » Next.js » Version: 15.4.6
    cpe:2.3:a:vercel:next.js:15.4.6
  • Vercel » Next.js » Version: 15.4.7
    cpe:2.3:a:vercel:next.js:15.4.7
  • Vercel » Next.js » Version: 15.4.8
    cpe:2.3:a:vercel:next.js:15.4.8
  • Vercel » Next.js » Version: 15.4.9
    cpe:2.3:a:vercel:next.js:15.4.9
  • 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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