@clerk/backend Performs Insufficient Verification of Data Authenticity
Impact
Applications that use the verifyWebhook() helper to verify incoming Clerk webhooks are susceptible to accepting improperly signed webhook events.
Patches
@clerk/backend: the helper has been patched as of2.4.0@clerk/astro: the helper has been patched as of2.10.2@clerk/express: the helper has been patched as of1.7.4@clerk/fastify: the helper has been patched as of2.4.4@clerk/nextjs: the helper has been patched as of6.23.3@clerk/nuxt: the helper has been patched as of1.7.5@clerk/react-router: the helper has been patched as of1.6.4@clerk/remix: the helper has been patched as of4.8.5@clerk/tanstack-react-start: the helper has been patched as of0.18.3
Resolution
The issue was resolved in @clerk/backend 2.4.0 by:
- Properly parsing the webhook request's signatures and comparing them against the signature generated from the received event
Workarounds
If unable to upgrade, developers can workaround this issue by verifying webhooks manually, per this documentation.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | @clerk/astro | >= 2.9.0, < 2.10.2 | 2.10.2 |
| Paquete de npm | @clerk/backend | >= 2.0.0, < 2.4.0 | 2.4.0 |
| Paquete de npm | @clerk/express | >= 1.6.0, < 1.7.4 | 1.7.4 |
| Paquete de npm | @clerk/fastify | >= 2.3.0, < 2.4.4 | 2.4.4 |
| Paquete de npm | @clerk/nextjs | >= 6.2.10, < 6.23.3 | 6.23.3 |
| Paquete de npm | @clerk/nuxt | >= 1.7.0, < 1.7.5 | 1.7.5 |
| Paquete de npm | @clerk/react-router | >= 1.5.0, < 1.6.4 | 1.6.4 |
| Paquete de npm | @clerk/remix | >= 4.8.0, < 4.8.5 | 4.8.5 |
| Paquete de npm | @clerk/tanstack-react-start | >= 0.16.0, < 0.18.3 | 0.18.3 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- Debilidad (CWE)
CWE-345- Plataforma
- npm
- Paquete
@clerk/astro, @clerk/backend, @clerk/express- Publicada
- 09.07.2025
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-9mp4-77wg-rwx9 - CC BY 4.0
Historial de vulnerabilidades: @clerk/express
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 3
- Primera → última
- 07.2025 04.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 3
Divulgaciones por año
- 2025: 1
- 2026: 2
-
@clerk/backend Performs Insufficient Verification of Data Authenticity esta entrada
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