{"id":"CVE-2026-34076","sourceIdentifier":"security-advisories@github.com","published":"2026-04-01T18:16:29.527","lastModified":"2026-06-17T10:38:31.453","vulnStatus":"Deferred","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'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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"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"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-01T18:00:15.522839Z","id":"CVE-2026-34076","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-918"}]}],"references":[{"url":"https://github.com/clerk/javascript/security/advisories/GHSA-gjxx-92w9-8v8f","source":"security-advisories@github.com"}]}