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Vulnerability record · CVE-2026-41248 · published 24 April 2026

CVE-2026-41248: Interpretation conflict vulnerability

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

9.1 CVSS 3.1 Critical EPSS 0.53% · top 57.6% CWE-436 · Interpretation conflictCWE-863 · Incorrect authorization Deferred
9.1CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-63030WordPress REST API route confusion leads to SQL injection and RCEWordPress 6.9.x before 6.9.5 and 7.0.x before 7.0.2 contain a REST API batch endpoint route confusion flaw (CWE-436). Chained with the author__not_in…KEVEPSS 10%analysed8.0CVE-2025-48384Git config CRLF handling allows submodule path link-following code executionGit mishandles trailing carriage returns when writing config values, so a submodule path ending in CR is read back altered during submodule initializ…KEVEPSS 4.1%analysed

Source: NIST National Vulnerability Database (record CVE-2026-41248), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.