CVE-2026-41248
Fixed upstream EPSS <1%CVSS 9.1
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
Products: clerk astro, clerk nextjs, clerk nuxt, clerk shared
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | @clerk/astro | 1.5.7 |
| npm | @clerk/astro | 2.17.10 |
| npm | @clerk/astro | 3.0.15 |
| npm | @clerk/nextjs | 5.7.6 |
| npm | @clerk/nextjs | 6.39.2 |
| npm | @clerk/nextjs | 7.2.1 |
| npm | @clerk/nuxt | 1.13.28 |
| npm | @clerk/nuxt | 2.2.2 |
| npm | @clerk/shared | 2.22.1 |
| npm | @clerk/shared | 3.47.4 |
| npm | @clerk/shared | 4.8.1 |