npm/@clerk/react CVE-2026-42349: high 8.1, EPSS 0.25%

Clerk has an authorization bypass when combining organization, billing, or reverification checks

Action: Upgrade @clerk/react to 6.4.3 or later.

npm i @clerk/react@6.4.3

Affected

Fixed versions

Sources

• osv: GHSA-w24r-5266-9c3c#npm/@clerk/react
• https://github.com/clerk/javascript/security/advisories/GHSA-w24r-5266-9c3c
• https://nvd.nist.gov/vuln/detail/CVE-2026-42349
• https://github.com/clerk/javascript

CVE-2026-42349 · published 2026-04-30T18:20:02Z · modified 2026-09-10T03:51:03.672253114Z · JSON