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High severity7.5OSV Advisory· Published Jul 9, 2025· Updated Apr 15, 2026

CVE-2025-53548

CVE-2025-53548

Description

Clerk helps developers build user management. Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are susceptible to accepting improperly signed webhook events. The issue was resolved in @clerk/backend 2.4.0.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
@clerk/backendnpm
>= 2.0.0, < 2.4.02.4.0
@clerk/astronpm
>= 2.9.0, < 2.10.22.10.2
@clerk/expressnpm
>= 1.6.0, < 1.7.41.7.4
@clerk/fastifynpm
>= 2.3.0, < 2.4.42.4.4
@clerk/nextjsnpm
>= 6.2.10, < 6.23.36.23.3
@clerk/nuxtnpm
>= 1.7.0, < 1.7.51.7.5
@clerk/react-routernpm
>= 1.5.0, < 1.6.41.6.4
@clerk/remixnpm
>= 4.8.0, < 4.8.54.8.5
@clerk/tanstack-react-startnpm
>= 0.16.0, < 0.18.30.18.3

Affected products

1
  • Clerk/JavaScriptOSV
    Range: @clerk/backend-core@0.1.0, @clerk/backend-core@0.1.0-alpha.1, @clerk/backend-core@0.1.0-alpha.2, …

Patches

1
ca9e5f16f520
https://github.com/clerk/javascriptvia osv

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

3

News mentions

0

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