CVE-2025-53548
Fixed upstream EPSS <1%CVSS 7.5
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.
Products: clerk javascript
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| npm | @clerk/astro | 2.10.2 |
| npm | @clerk/backend | 2.4.0 |
| npm | @clerk/express | 1.7.4 |
| npm | @clerk/fastify | 2.4.4 |
| npm | @clerk/nextjs | 6.23.3 |
| npm | @clerk/nuxt | 1.7.5 |
| npm | @clerk/react-router | 1.6.4 |
| npm | @clerk/remix | 4.8.5 |
| npm | @clerk/tanstack-react-start | 0.18.3 |