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Description

Clerk JavaScript is the official JavaScript repository for Clerk authentication. 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. This call shape can be bypassed if certain conditions are met: a has() or auth.protect() call that combines a reverification check with any of role, permission, feature, or plan, or that combines a billing check (feature or plan) with a role or permission check. This vulnerability is fixed in @clerk/clerk-js 5.125.10 and 6.7.5.

PUBLISHED Reserved 2026-04-26 | Published 2026-05-11 | Updated 2026-05-11 | Assigner GitHub_M




HIGH: 7.6CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-754: Improper Check for Unusual or Exceptional Conditions

CWE-863: Incorrect Authorization

Product status

>= 5.22.0, < 5.125.10
affected

>= 6.0.0, < 6.7.5
affected

>= 3.0.0, <= 3.47.4
affected

>= 4.0.0, <= 4.8.2
affected

>= 2.0.0, <= 2.33.2
affected

>= 3.0.0, <= 3.2.13
affected

>= 6.0.0, <= 6.39.2
affected

>= 7.0.0, <= 7.2.3
affected

>= 5.9.0, <= 5.61.5
affected

>= 6.0.0, <= 6.4.2
affected

>= 1.0.0, <= 1.17.20
affected

>= 2.0.0, <= 2.0.15
affected

>= 2.0.0, <= 2.17.10
affected

>= 3.0.0, <= 3.0.17
affected

>= 1.0.0, <= 1.13.28
affected

>= 2.0.0, <= 2.2.4
affected

>= 2.2.11, <= 2.19.35
affected

>= 3.0.0, <= 3.2.1
affected

>= 0.0.1, <= 2.4.12
affected

>= 3.0.0, <= 3.1.3
affected

>= 0.0.1, <= 0.29.10
affected

>= 1.0.0, <= 1.1.3
affected

>= 1.3.5, <= 2.9.14
affected

>= 3.0.0, <= 3.1.14
affected

>= 1.0.42, <= 2.6.30
affected

>= 3.0.0, <= 3.1.15
affected

>= 0.1.0, <= 1.7.78
affected

>= 2.0.0, <= 2.1.5
affected

>= 0.0.2, <= 0.1.15
affected

References

github.com/...script/security/advisories/GHSA-w24r-5266-9c3c

cve.org (CVE-2026-42349)

nvd.nist.gov (CVE-2026-42349)

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