CVE-2026-34076

high

Published 2026-04-01 · Modified 2026-04-06

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.4

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.4

Description

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

Predictions

Exploit likelihood

82%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	@clerk/backend	`>=3.0.0,<3.2.3`	`3.2.3`
npm	@clerk/express	`>=2.0.0,<2.0.7`	`2.0.7`
npm	@clerk/hono	`>=0.1.0,<0.1.5`	`0.1.5`
npm	@clerk/fastify	`>=3.1.0,<3.1.5`	`3.1.5`

References

CWEs

CWE-918

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.