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GHSA-6HW5-45GM-FJ88 @fastify/express has a middleware authentication bypass via URL normalization gaps (duplicate slashes and semicolons)

🗓️ 16 Apr 2026 01:03:46Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 13 Views

Authentication bypass in fastify express due to URL normalization gaps that let bypass occur via malformed URLs.

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10 Sep 2026 03:50Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.19.1
CVSS 49.1
EPSS0.00483
13