CVE-2026-42349

Fixed upstream EPSS <1%CVSS 7.6

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.

Published 2026-05-11 · CVE record · OSV

Products: clerk javascript, clerk shared, @clerk backend, clerk nextjs, @clerk clerk-react, @clerk react, @clerk vue, clerk astro, clerk nuxt, @clerk clerk-expo, @clerk expo, @clerk react-router, @clerk tanstack-react-start, @clerk chrome-extension, @clerk fastify, @clerk express, @clerk hono

Fixed upstream