{"schema_version":1,"title":"Clerk Nextjs vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Clerk Nextjs: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42349, was published on 11 May 2026.","url":"https://junglewise.ai/threats/technologies/nextjs","json_url":"https://junglewise.ai/threats/technologies/nextjs.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/nextjs","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":4,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":2},"latest":[{"cve":"CVE-2026-42349","cvss":8.1,"epss":0.0043,"slug":"cve-2026-42349-clerk-javascript-sdks-authorization-bypass-in-combined-predicates","title":"Clerk JavaScript SDKs authorization bypass in combined predicates","severity":"high","exploited":false,"published_at":"2026-05-11T17:16:33.147+00:00","url":"https://junglewise.ai/threats/cve-2026-42349-clerk-javascript-sdks-authorization-bypass-in-combined-predicates"},{"cve":"CVE-2026-41248","cvss":9.1,"epss":0.0053,"slug":"cve-2026-41248-official-clerk-javascript-sdks-middleware-based-route-protection","title":"Official Clerk JavaScript SDKs: Middleware-based route protection bypass","severity":"critical","exploited":false,"published_at":"2026-04-16T21:28:26+00:00","url":"https://junglewise.ai/threats/cve-2026-41248-official-clerk-javascript-sdks-middleware-based-route-protection"},{"cve":"CVE-2025-53548","cvss":3.1,"epss":0.0015,"slug":"cve-2025-53548-clerk-webhook-verifywebhook-insufficient-signature-verification","title":"Clerk webhook verifyWebhook insufficient signature verification","severity":"low","exploited":false,"published_at":"2025-07-09T18:07:40+00:00","url":"https://junglewise.ai/threats/cve-2025-53548-clerk-webhook-verifywebhook-insufficient-signature-verification"},{"cve":"CVE-2024-22206","cvss":3.1,"epss":0.0068,"slug":"cve-2024-22206-clerk-nextjs-auth-and-getauth-idor-vulnerability","title":"Clerk nextjs auth() and getAuth() IDOR vulnerability","severity":"low","exploited":false,"published_at":"2024-01-12T20:27:29+00:00","url":"https://junglewise.ai/threats/cve-2024-22206-clerk-nextjs-auth-and-getauth-idor-vulnerability"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Clerk Backend","slug":"backend","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/backend"}],"technology":{"hub":true,"name":"Clerk Nextjs","slug":"nextjs","vendor":{"name":"Clerk","slug":"clerk","url":"https://junglewise.ai/threats/vendors/clerk"},"aliases":[],"category":"framework","homepage":"https://clerk.com/docs/references/nextjs/overview","repo_url":"https://github.com/clerk/javascript","description":"The official Clerk SDK for Next.js, providing authentication and user management components.","url":"https://junglewise.ai/threats/technologies/nextjs"},"most_severe":[{"cve":"CVE-2026-41248","cvss":9.1,"epss":0.0053,"slug":"cve-2026-41248-official-clerk-javascript-sdks-middleware-based-route-protection","title":"Official Clerk JavaScript SDKs: Middleware-based route protection bypass","severity":"critical","exploited":false,"published_at":"2026-04-16T21:28:26+00:00","url":"https://junglewise.ai/threats/cve-2026-41248-official-clerk-javascript-sdks-middleware-based-route-protection"},{"cve":"CVE-2026-42349","cvss":8.1,"epss":0.0043,"slug":"cve-2026-42349-clerk-javascript-sdks-authorization-bypass-in-combined-predicates","title":"Clerk JavaScript SDKs authorization bypass in combined predicates","severity":"high","exploited":false,"published_at":"2026-05-11T17:16:33.147+00:00","url":"https://junglewise.ai/threats/cve-2026-42349-clerk-javascript-sdks-authorization-bypass-in-combined-predicates"},{"cve":"CVE-2024-22206","cvss":3.1,"epss":0.0068,"slug":"cve-2024-22206-clerk-nextjs-auth-and-getauth-idor-vulnerability","title":"Clerk nextjs auth() and getAuth() IDOR vulnerability","severity":"low","exploited":false,"published_at":"2024-01-12T20:27:29+00:00","url":"https://junglewise.ai/threats/cve-2024-22206-clerk-nextjs-auth-and-getauth-idor-vulnerability"},{"cve":"CVE-2025-53548","cvss":3.1,"epss":0.0015,"slug":"cve-2025-53548-clerk-webhook-verifywebhook-insufficient-signature-verification","title":"Clerk webhook verifyWebhook insufficient signature verification","severity":"low","exploited":false,"published_at":"2025-07-09T18:07:40+00:00","url":"https://junglewise.ai/threats/cve-2025-53548-clerk-webhook-verifywebhook-insufficient-signature-verification"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}