CVE-2025-53548 - CVE House

Status published High CVE-2025-53548

@clerk/backend Performs Insufficient Verification of Data Authenticity

7.5 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

https://github.com/clerk/javascript/security/advisories/GHSA-9mp4-77wg-rwx9

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@clerk/nextjs auth() and getAuth() methods vulnerable to insecure direct object reference (IDOR)

Critical 9.1

Affected Vendor

clerk

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Affected Software

javascript

Vulnerable Versions:

< 2.4.0

Timeline

Official Publish: July 9th, 2025

Last Modified: July 9th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weaknesses (CWE)

CWE-345

MITRE ATT&CK TTPs

T1557 Adversary-in-the-Middle

Credential Access

T1071 Application Layer Protocol

Command and Control

T1552 Unsecured Credentials