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Next.js: Next.js: Server-Side Request Forgery via crafted WebSocket upgrade requests

🗓️ 02 Jul 2026 00:03:15Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Next.js built-in server is vulnerable to SSRF from crafted WebSocket upgrades, proxying to internal or external destinations.

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16 Jul 2026 22:07Current
6Medium risk
Vulners AI Score6
CVSS 3.18.6
EPSS0.38811
SSVC
6