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

🗓️ 12 Aug 2026 19:35:14Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Next.js built-in Node.js server allows SSRF via crafted WebSocket upgrade requests proxying to arbitrary destinations.

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21 Aug 2026 17:12Current
8High risk
Vulners AI Score8
CVSS 3.18.6
EPSS0.38872
SSVC
6