Webhook Verification Flaw in Clerk Application by Clerk
CVE-2025-53548

7.5HIGH

Key Information:

Vendor

Clerk

Status
Javascript
Vendor
CVE Published:
9 July 2025

What is CVE-2025-53548?

Applications utilizing Clerk for user management may be vulnerable to accepting improperly signed webhook events due to a flaw in the verifyWebhook() helper. This vulnerability can compromise the integrity of your application by allowing the acceptance of malicious webhook requests. Developers are advised to update to @clerk/backend version 2.4.0 or later to mitigate this risk. For detailed information, please refer to the security advisory at GitHub.

Affected Version(s)

javascript < 2.4.0

References

https://github.com/clerk/javascript/security/advisories/G...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-53548 : Webhook Verification Flaw in Clerk Application by Clerk