CVE-2026-25651
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductTgies Client-certificate-auth
PublishedFeb 6, 2026
First seenFeb 6, 2026
Weakness typeCWE-601Open redirect
How to fix
Update
- tgies client-certificate-auth1.0.0 or later
- client-certificate-auth1.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tgies client-certificate-auth | 0.2.1 ≤ v < 1.0.0 | 1.0.0 |
| client-certificate-authnpm | 0.2.1 ≤ v < 1.0.0 | 1.0.0 |
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