CVE-2025-53548 — HIGH (7.5)

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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-345

References

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

FAQ

What is CVE-2025-53548?

CVE-2025-53548 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 issu...

How severe is CVE-2025-53548?

CVE-2025-53548 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-53548?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.