Remote Code Execution Vulnerability in Next.js Framework by Vercel
CVE-2026-45109

7.5HIGH

Key Information:

Vendor

Vercel
Status
Next.js
Vendor
CVE Published:
13 May 2026

What is CVE-2026-45109?

The Next.js framework from Vercel has a vulnerability that affects versions 15.2.0 to before 15.5.18 and 16.2.6. This issue arises from an incomplete fix for a related vulnerability, CGE-2026-44575, which did not sufficiently address concerns in middleware.ts when using Turbopack. Developers utilizing these versions may be at risk of remote code execution, warranting immediate attention to update to the provided patched versions 15.5.18 and 16.2.6.

Affected Version(s)

next.js >= 15.2.0, < 15.5.17 < 15.2.0, 15.5.17

next.js >= 16.0.0, < 16.2.6 < 16.0.0, 16.2.6

References

https://github.com/vercel/next.js/security/advisories/GHS...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.