High 7.6Published May 11, 2026

CVE-2026-42349Clerk: Authorization bypass when combining organization, billing, or reverification checks

Updated under an hour ago (Oct 27, 2026, 6:10 AM ET)

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It affects clerk javascript and 31 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for clerk javascript

Exploited in the last 30 days

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.

CVSS: 7.6 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-754, CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

clerk javascript clerk:javascript (from the name)	from 5.22.0, < 5.125.10; from 6.0.0, < 6.7.5	CNA record
@clerk shared clerk:shared (from the name)	from 3.0.0, <= 3.47.4; from 4.0.0, <= 4.8.2	CNA record
@clerk backend clerk:backend (from the name)	from 2.0.0, <= 2.33.2; from 3.0.0, <= 3.2.13	CNA record
@clerk nextjs clerk:nextjs (from the name)	from 6.0.0, <= 6.39.2; from 7.0.0, <= 7.2.3	CNA record
@clerk clerk-react clerk:react (from the name)	from 5.9.0, <= 5.61.5	CNA record
@clerk vue clerk:vue (from the name)	from 1.0.0, <= 1.17.20; from 2.0.0, <= 2.0.15	CNA record
@clerk astro clerk:astro (from the name)	from 2.0.0, <= 2.17.10; from 3.0.0, <= 3.0.17	CNA record
@clerk nuxt clerk:nuxt (from the name)	from 1.0.0, <= 1.13.28; from 2.0.0, <= 2.2.4	CNA record
@clerk clerk-expo clerk:expo (from the name)	from 2.2.11, <= 2.19.35	CNA record
@clerk react-router clerk:react_router (from the name)	from 0.0.1, <= 2.4.12; from 3.0.0, <= 3.1.3	CNA record
1–10 of 32

References

References

https://github.com/clerk/javascript/security/advisories/GHSA-w24r-5266-9c3c	x-refsource-confirm, mitigation, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.