Report: CVE-2026-41248 - Official Clerk JavaScript SDKs: Middleware-based route protection bypass
CVE ID :CVE-2026-41248 Published : April 24, 2026, 9:16 p.m. | 40 minutes ago Description :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 Severity: 9.1 | CRITICAL Visit the link for more details, such as CVSS details, affected products, timeline, and more...