CVE-2026-42349

UNKNOWN 0.0

Clerk: Authorization bypass when combining organization, billing, or reverification checks

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Clerk JavaScript is the official JavaScript repository for Clerk authentication. has(), auth.protect(), and related authorization predicates in @clerk/shared, @clerk/nextjs, @clerk/backend, and other framework SDKs can return true for certain combined authorization checks when the result should be false, allowing a gated action to proceed for a user who does not satisfy the full set of requested conditions. This call shape can be bypassed if certain conditions are met: a has() or auth.protect() call that combines a reverification check with any of role, permission, feature, or plan, or that combines a billing check (feature or plan) with a role or permission check. This vulnerability is fixed in @clerk/clerk-js 5.125.10 and 6.7.5.

CWE	CWE-754 CWE-863
Vendor	clerk
Product	javascript
Published	May 11, 2026

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Affected Versions

clerk / javascript

>= 5.22.0, < 5.125.10 >= 6.0.0, < 6.7.5

@clerk / shared

>= 3.0.0, <= 3.47.4 >= 4.0.0, <= 4.8.2

@clerk / backend

>= 2.0.0, <= 2.33.2 >= 3.0.0, <= 3.2.13

@clerk / nextjs

>= 6.0.0, <= 6.39.2 >= 7.0.0, <= 7.2.3

@clerk / clerk-react

>= 5.9.0, <= 5.61.5

@clerk / react

>= 6.0.0, <= 6.4.2

@clerk / vue

>= 1.0.0, <= 1.17.20 >= 2.0.0, <= 2.0.15

@clerk / astro

>= 2.0.0, <= 2.17.10 >= 3.0.0, <= 3.0.17

@clerk / nuxt

>= 1.0.0, <= 1.13.28 >= 2.0.0, <= 2.2.4

@clerk / clerk-expo

>= 2.2.11, <= 2.19.35

@clerk / expo

>= 3.0.0, <= 3.2.1

@clerk / react-router

>= 0.0.1, <= 2.4.12 >= 3.0.0, <= 3.1.3

@clerk / tanstack-react-start

>= 0.0.1, <= 0.29.10 >= 1.0.0, <= 1.1.3

@clerk / chrome-extension

>= 1.3.5, <= 2.9.14 >= 3.0.0, <= 3.1.14

@clerk / fastify

>= 1.0.42, <= 2.6.30 >= 3.0.0, <= 3.1.15

@clerk / express

>= 0.1.0, <= 1.7.78 >= 2.0.0, <= 2.1.5

@clerk / hono

>= 0.0.2, <= 0.1.15

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/clerk/javascript/security/advisories/GHSA-w24r-5266-9c3c