Is CVE-2026-34076 actively exploited?

No active exploitation of CVE-2026-34076 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34076 be exploited remotely?

Yes. CVE-2026-34076 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34076?

CVE-2026-34076 has a CVSS score of 7.4 (HIGH).

HOME VULNERABILITIESCVE-2026-34076

HIGH

CVE-2026-34076

CWE-918Published: April 1, 2026· Updated: Apr 3, 2026

7.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.5th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-34076 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.4.