# @clerk/backend (npm) vulnerabilities

3 known vulnerabilities (3 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Weekly downloads: 7.5M
- Dependents: 85
- Registry: https://www.npmjs.com/package/@clerk/backend

## Advisories (3)

### [CVE-2026-42349](https://cve.now/CVE-2026-42349): Clerk: Authorization bypass when combining organization, billing, or reverification checks

- Severity: High 7.6
- Published: May 11, 2026
- Affected: from 2.0.0, fixed in 2.33.3; from 3.0.0, fixed in 3.2.14.

### [CVE-2026-34076](https://cve.now/CVE-2026-34076): Clerk JavaScript: SSRF in the opt-in clerkFrontendApiProxy feature may leak secret keys to unintended host

- Severity: High 7.4
- Published: Apr 1, 2026
- Affected: from 3.0.0, fixed in 3.2.3.

### [CVE-2025-53548](https://cve.now/CVE-2025-53548): @clerk/backend Performs Insufficient Verification of Data Authenticity

- Severity: High 7.5
- Published: Jul 9, 2025
- Affected: from 2.0.0, fixed in 2.4.0.

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