CVE-2026-25651
MEDIUM
GHSA-m4w9-gch5-c2g4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
4Description
client-certificate-auth is middleware for Node.js implementing client SSL certificate authentication/authorization. Versions 0.2.1 and 0.3.0 of client-certificate-auth contain an open redirect vulnerability. The middleware unconditionally redirects HTTP requests to HTTPS using the unvalidated Host header, allowing an attacker to redirect users to arbitrary domains. This vulnerability is fixed in 1.0.0.
Analysis
Client-certificate-auth middleware for Node.js versions 0.2.1 and 0.3.0 fails to validate the Host header when redirecting HTTP requests to HTTPS, enabling attackers to craft malicious redirects that direct users to arbitrary domains. Public exploit code exists for this open redirect vulnerability, and no patch is currently available for affected versions.
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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External POC / Exploit Code
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