CVE-2025-53548— @clerk/backend Performs Insufficient Verification of Data Authenticity
Quick assessment
Affected
clerk javascript
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Official Clerk JavaScript SDKs是Clerk开源的一个用于 Clerk 身份验证的官方 Javascript 存储库。 Official Clerk JavaScript SDKs存在数据伪造问题漏洞，该漏洞源于verifyWebhook验证不足，可能导致接受未签名webhook事件。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-53548
Vulnerability Information
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Vulnerability Title
@clerk/backend Performs Insufficient Verification of Data Authenticity
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Official Clerk JavaScript SDKs 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Official Clerk JavaScript SDKs是Clerk开源的一个用于 Clerk 身份验证的官方 Javascript 存储库。 Official Clerk JavaScript SDKs存在数据伪造问题漏洞，该漏洞源于verifyWebhook验证不足，可能导致接受未签名webhook事件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| clerk | javascript | < 2.4.0 | - |
|
II. Public POCs for CVE-2025-53548
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Verified env
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Qwen3.6-35B-A3B
· 11121 chars
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III. Intelligence Information for CVE-2025-53548
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Vendor Advisories for CVE-2025-53548 (1)
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V. Comments for CVE-2025-53548
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