FKIE_CVE-2026-34076

Vulnerability from fkie_nvd - Published: 2026-04-01 18:16 - Updated: 2026-10-26 22:10
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
Clerk JavaScript is the official JavaScript repository for Clerk authentication. In @clerk/hono from versions 0.1.0 to before 0.1.5, @clerk/express from versions 2.0.0 to before 2.0.7, @clerk/backend from versions 3.0.0 to before 3.2.3, and @clerk/fastify from versions 3.1.0 to before 3.1.5, the clerkFrontendApiProxy function in @clerk/backend is vulnerable to Server-Side Request Forgery (SSRF). An unauthenticated attacker can craft a request path that causes the proxy to send the application's Clerk-Secret-Key to an attacker-controlled server. This issue has been patched in @clerk/hono version 0.1.5, @clerk/express version 2.0.7, @clerk/backend version 3.2.3, and @clerk/fastify version 3.1.5.
References
security-advisories@github.comhttps://github.com/clerk/javascript/security/advisories/GHSA-gjxx-92w9-8v8f
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "javascript",
          "vendor": "clerk",
          "versions": [
            {
              "status": "affected",
              "version": "@clerk/hono \u003e= 0.1.0, \u003c 0.1.5"
            },
            {
              "status": "affected",
              "version": "@clerk/express \u003e= 2.0.0, \u003c 2.0.7"
            },
            {
              "status": "affected",
              "version": "@clerk/backend \u003e= 3.0.0, \u003c 3.2.3"
            },
            {
              "status": "affected",
              "version": "@clerk/fastify \u003e= 3.1.0, \u003c 3.1.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Clerk JavaScript is the official JavaScript repository for Clerk authentication. In @clerk/hono from versions 0.1.0 to before 0.1.5, @clerk/express from versions 2.0.0 to before 2.0.7, @clerk/backend from versions 3.0.0 to before 3.2.3, and @clerk/fastify from versions 3.1.0 to before 3.1.5, the clerkFrontendApiProxy function in @clerk/backend is vulnerable to Server-Side Request Forgery (SSRF). An unauthenticated attacker can craft a request path that causes the proxy to send the application\u0027s Clerk-Secret-Key to an attacker-controlled server. This issue has been patched in @clerk/hono version 0.1.5, @clerk/express version 2.0.7, @clerk/backend version 3.2.3, and @clerk/fastify version 3.1.5."
    },
    {
      "lang": "es",
      "value": "Clerk JavaScript es el repositorio oficial de JavaScript para la autenticaci\u00f3n de Clerk. En @clerk/hono desde las versiones 0.1.0 hasta antes de la 0.1.5, @clerk/express desde las versiones 2.0.0 hasta antes de la 2.0.7, @clerk/backend desde las versiones 3.0.0 hasta antes de la 3.2.3, y @clerk/fastify desde las versiones 3.1.0 hasta antes de la 3.1.5, la funci\u00f3n clerkFrontendApiProxy en @clerk/backend es vulnerable a la falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF). Un atacante no autenticado puede elaborar una ruta de petici\u00f3n que hace que el proxy env\u00ede la Clerk-Secret-Key de la aplicaci\u00f3n a un servidor controlado por el atacante. Este problema ha sido parcheado en @clerk/hono versi\u00f3n 0.1.5, @clerk/express versi\u00f3n 2.0.7, @clerk/backend versi\u00f3n 3.2.3, y @clerk/fastify versi\u00f3n 3.1.5."
    }
  ],
  "id": "CVE-2026-34076",
  "lastModified": "2026-10-26T22:10:00.163",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34076",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-01T18:00:15.522839Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-01T18:16:29.527",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/clerk/javascript/security/advisories/GHSA-gjxx-92w9-8v8f"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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