CVE-2026-44574

Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected content to be rendered without passing the expected middleware check. This vulnerability is fixed in 15.5.16 and 16.2.5.

Score
CVSS 3.1 8.1 High
Status
Modified - security-advisories@github.com
Published
2026-05-13
Last modified
2026-10-26
Weaknesses
CWE-288, CWE-551

Affected products

References

 
 
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