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Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header

🗓️ 15 Apr 2026 19:24:41Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 7 Views

Fastify v5.x allows body schema validation bypass via a leading space in the Content-Type header.

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24 Apr 2026 20:42Current
7High risk
Vulners AI Score7
CVSS 3.17.5
EPSS0.00635
SSVC
7