CVE-2026-22037

Published: Jan 19, 2026Updated: Jan 26, 2026 Sources: CVE List NVD GHSACWE-177

NVD MITRE

8.4CVSSHIGH

EPSS Score

Description

@fastify/express vulnerable to Improper Handling of URL Encoding (Hex Encoding)

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:LAvailability

Low

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Weaknesses

CWE-177 CWE-288

Affected Products

@fastify/express npm OSS Libraries

fastify-express fastify

Library

OSS Libraries / web-framework

npmpackage-ecosystemOSS Libraries

fastifyoss-projectOSS Librariesaka fastify/middie, fastify-multipart

Exploitability

Official Patch Available

References

https://github.com/fastify/fastify-express/security/advisories/GHSA-g6q3-96cp-5r5m

github.com

https://nvd.nist.gov/vuln/detail/CVE-2026-22037

nvd.nist.gov

https://github.com/fastify/fastify-express/commit/dc02a3fe1387f945143f22597baa42557d549a40

github.com

and 2 more references View all →

Timeline

Published

Jan 19, 2026

Last Updated

Jan 26, 2026

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