Vendor
Clerk vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 6 vulnerabilities in Clerk: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42349, was published on 11 May 2026. 2 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 1
- Exploited in the wild
- 0
About Clerk
Clerk is an authentication and user management platform for modern web applications.
Clerk technologies
Latest Clerk vulnerabilities
- CVE-2026-42349: Clerk JavaScript SDKs authorization bypass in combined predicateshighCVSS 8.1EPSS 0.4%
- CVE-2026-41248: Official Clerk JavaScript SDKs: Middleware-based route protection bypasscriticalCVSS 9.1EPSS 0.5%
- CVE-2026-34076: Clerk backend SSRF in clerkFrontendApiProxy featurelowCVSS 3.1EPSS 0.4%
- CVE-2025-63700: Clerk-js authentication bypass at OTP verificationlowCVSS 3.1
- CVE-2025-53548: Clerk webhook verifyWebhook insufficient signature verificationlowCVSS 3.1EPSS 0.1%
- CVE-2024-22206: Clerk nextjs auth() and getAuth() IDOR vulnerabilitylowCVSS 3.1EPSS 0.7%
Most severe Clerk vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-41248: Official Clerk JavaScript SDKs: Middleware-based route protection bypasscriticalCVSS 9.1EPSS 0.5%
- CVE-2026-42349: Clerk JavaScript SDKs authorization bypass in combined predicateshighCVSS 8.1EPSS 0.4%
- CVE-2024-22206: Clerk nextjs auth() and getAuth() IDOR vulnerabilitylowCVSS 3.1EPSS 0.7%
- CVE-2026-34076: Clerk backend SSRF in clerkFrontendApiProxy featurelowCVSS 3.1EPSS 0.4%
- CVE-2025-53548: Clerk webhook verifyWebhook insufficient signature verificationlowCVSS 3.1EPSS 0.1%
- CVE-2025-63700: Clerk-js authentication bypass at OTP verificationlowCVSS 3.1
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/clerk.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Clerk vulnerabilities", https://junglewise.ai/threats/vendors/clerk, 26 September 2026.