CVE-2026-41248

Clerk JavaScript is the official JavaScript repository for Clerk authentication. createRouteMatcher in @clerk/nextjs, @clerk/nuxt, and @clerk/astro can be bypassed by certain crafted requests, allowing them to skip middleware gating and reach downstream handlers. This vulnerability is fixed in @clerk/astro 1.5.7, 2.17.10, and 3.0.15; @clerk/nextjs 5.7.6, 6.39.2, and 7.2.1; @clerk/nuxt 1.13.28 and 2.2.2; and @clerk/shared 2.22.1, 3.47.4, anc 4.8.1

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9

Configurations

No configuration.

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Clerk JavaScript es el repositorio oficial de JavaScript para la autenticación de Clerk. createRouteMatcher en @clerk/nextjs, @clerk/nuxt y @clerk/astro puede ser eludido por ciertas solicitudes manipuladas, permitiéndoles omitir el control del middleware y alcanzar los manejadores posteriores. Esta vulnerabilidad está corregida en @clerk/astro 1.5.7, 2.17.10 y 3.0.15; @clerk/nextjs 5.7.6, 6.39.2 y 7.2.1; @clerk/nuxt 1.13.28 y 2.2.2; y @clerk/shared 2.22.1, 3.47.4 y 4.8.1.

Information

Published : 2026-04-24 21:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-41248

Mitre link : CVE-2026-41248

CVE.ORG link : CVE-2026-41248

JSON object : View

Products Affected

No product.

CWE

CWE-436

Interpretation Conflict

CWE-863

Incorrect Authorization

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