# CVE-2025-53548: @clerk/backend Performs Insufficient Verification of Data Authenticity

> CVE-2025-53548: @clerk/backend Performs Insufficient Verification of Data Authenticity. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-53548
Last updated: 2026-06-17T09:38:25Z

- Published: 2025-07-09 17:12 UTC · Updated: 2026-06-17 09:38 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS: 0.17%, 7th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-345

## 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 vendors and products

- clerk: javascript

## Tracked companies

- [Clerk](https://rewindex.com/company/clerk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-53548)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-53548)
- [https://github.com/clerk/javascript/security/advisories/GHSA-9mp4-77wg-rwx9](https://github.com/clerk/javascript/security/advisories/GHSA-9mp4-77wg-rwx9)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-53548 · Markdown: https://rewindex.com/cve/CVE-2025-53548.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-53548 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:29.648Z