Vulnerabilities CVE-2026-33806

CVE-2026-33806

High

Open

TLP:CLEAR

fastify vulnerable to Body Schema Validation Bypass via Leading Space in Content-Type Header

NVD CVE.org

AI Analysis

No AI analysis yet.

Description

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.

Details

CVSS Score: 7.5
EPSS Score ⓘ: 0.41%

34th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Confidence: 90%
Published: Apr 15, 2026
Last Modified: Jul 15, 2026

Notes

No notes yet. Click "Add Note" to create the first analysis note.

Opinions

No opinions yet. Be the first to assess this intelligence.