Critical severity9.1NVD Advisory· Published Apr 24, 2026· Updated Apr 29, 2026
CVE-2026-41248
CVE-2026-41248
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
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@clerk/nextjsnpm | >= 5.0.0, < 5.7.6 | 5.7.6 |
@clerk/nuxtnpm | >= 1.1.0, < 1.13.28 | 1.13.28 |
@clerk/astronpm | >= 0.0.1, < 1.5.7 | 1.5.7 |
@clerk/sharednpm | >= 2.20.17, < 2.22.1 | 2.22.1 |
@clerk/nextjsnpm | >= 6.0.0-snapshot.vb87a27f, < 6.39.2 | 6.39.2 |
@clerk/nextjsnpm | >= 7.0.0, < 7.2.1 | 7.2.1 |
@clerk/nuxtnpm | >= 2.0.0, < 2.2.2 | 2.2.2 |
@clerk/astronpm | >= 2.0.0-snapshot.v20241206174604, < 2.17.10 | 2.17.10 |
@clerk/astronpm | >= 3.0.0, < 3.0.15 | 3.0.15 |
@clerk/sharednpm | >= 3.0.0-canary.v20250225091530, < 3.47.4 | 3.47.4 |
@clerk/sharednpm | >= 4.0.0, < 4.8.1 | 4.8.1 |
Affected products
4- ghsa-coords4 versions
>= 0.0.1, < 1.5.7+ 3 more
- (no CPE)range: >= 0.0.1, < 1.5.7
- (no CPE)range: >= 5.0.0, < 5.7.6
- (no CPE)range: >= 1.1.0, < 1.13.28
- (no CPE)range: >= 2.20.17, < 2.22.1
Patches
Vulnerability mechanics
References
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