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CVE-2026-34076 Clerk JavaScript: SSRF in the opt-in clerkFrontendApiProxy feature may leak secret keys to unintended host

🗓️ 01 Apr 2026 16:59:21Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 30 Views

Server side forgery in clerkFrontendApiProxy could leak Clerk-Secret-Key to attackers; patches released.

Related
Affected
Refs
[
  {
    "vendor": "clerk",
    "product": "javascript",
    "versions": [
      {
        "version": "@clerk/hono >= 0.1.0, < 0.1.5",
        "status": "affected"
      },
      {
        "version": "@clerk/express >= 2.0.0, < 2.0.7",
        "status": "affected"
      },
      {
        "version": "@clerk/backend >= 3.0.0, < 3.2.3",
        "status": "affected"
      },
      {
        "version": "@clerk/fastify >= 3.1.0, < 3.1.5",
        "status": "affected"
      }
    ]
  }
]

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