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

Description

has(), auth.protect(), and related authorization predicates in @clerk/shared, @clerk/nextjs, @clerk/backend, and other framework SDKs can return true for certain combined authorization checks when the result should be false, allowing a gated action to proceed for a user who does not satisfy the full set of requested conditions.

Recommendation

Update the @clerk/tanstack-react-start package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 1.0.0, <= 1.1.3

  >= 0.0.1, <= 0.29.10**

• Patched version(s): **1.1.4

  0.29.11**

References

• GHSA-w24r-5266-9c3c
• CVE-2026-42349
• CWE-754
• CWE-863
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Clerk has an authorization bypass when combining organization, billing, or reverification checks - @clerk/clerk-js - CVE-2026-42349
• Clerk has an authorization bypass when combining organization, billing, or reverification checks - @clerk/clerk-expo - CVE-2026-42349
• Clerk has an authorization bypass when combining organization, billing, or reverification checks - @clerk/chrome-extension - CVE-2026-42349
• Clerk has an authorization bypass when combining organization, billing, or reverification checks - @clerk/backend - CVE-2026-42349

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Tags:

npm

@clerk/tanstack-react-start