CVE Watch15 jul 2026

CVE-2026-33806

Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepen

CVSS

7.5

Alto

EPSS

0.4%

p33

KEV

—

Exploit Today

0-100

Publicado: 15 abr 2026 · Última mod.: 15 jul 2026 · CWE-1287 · CWE-1289

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-06-302026-07-17

Descripción técnica

Impact: Fastify applications using schema.body.content for per-content-type body validation can have validation bypassed entirely by prepending a space to the Content-Type header. The body is still parsed correctly but schema validation is skipped. This is a regression introduced in fastify >= 5.3.2 by the fix for CVE-2025-32442 Patches: Upgrade to fastify v5.8.5 or later. Workarounds: None. Upgrade to the patched version.

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