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    CVE-2026-41248

    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

    Published:Apr 24, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 24, 2026
    EPSS Score:0.00093
    CVSS Score:9.1

    Affected Products

    Vendor
    Clerk
    Product
    Astro
    Vendor
    Clerk
    Product
    Nextjs
    Vendor
    Clerk
    Product
    Nuxt
    Vendor
    Clerk
    Product
    Shared

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High