CVE-2026-42349Published

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 certa…

Exact source revision recorded 27 Oct 2026 11:12:01 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

nvd · CVE-2026-42349

Published

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.

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-754 · CWE-863

Original publisher date fields

published: 2026-05-11T17:16:33.147

lastModified: 2026-10-26T18:10:00.173

17 source CPE criteria · context only

cpe:2.3:a:clerk:clerk\/astro:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/backend:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/chrome-extension:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/clerk-expo:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/clerk-js:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/clerk-react:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/expo:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/express:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/fastify:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/hono:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/nextjs:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/nuxt:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/react:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/react-router:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/shared:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/tanstack-react-start:*:*:*:*:*:node.js:*:*
cpe:2.3:a:clerk:clerk\/vue:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 11 May 2026 17:16:33 UTC
Source modified: 26 Oct 2026 18:10:00 UTC
Observed here: 27 Oct 2026 11:12:01 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 7.6 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N