Known CVE
Next.js Middleware Bypass
Next.js contains a critical middleware bypass vulnerability affecting versions 11.1.4 through 15.2.2. The vulnerability allows attackers to bypass middleware security controls by sending a specially crafted 'x-middleware-subrequest' header, which can lead to authorization bypass and other security control circumvention.
CVE-2025-29927
Critical2025CVSS 9.1CWE-287
cve2025 · nextjs · middleware · auth-bypass · vkev · vuln
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