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Next.js vulnerable to server-side request forgery in applications using WebSocket upgrades

๐Ÿ—“๏ธย 11 May 2026ย 15:55:15Reported byย GitHub Advisory DatabaseTypeย 
github
ย github
๐Ÿ”—ย github.com๐Ÿ‘ย 7ย Views

Next.js is vulnerable to server-side forgery via WebSocket upgrades and safety checks now apply.

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14 May 2026 20:38Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.6
EPSS0.0581
SSVC
7