{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41248", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-18T03:47:03.136Z", "datePublished": "2026-04-24T21:04:35.810Z", "dateUpdated": "2026-04-24T21:04:35.810Z"}, "containers": {"cna": {"title": "Official Clerk JavaScript SDKs: Middleware-based route protection bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-436", "lang": "en", "description": "CWE-436: Interpretation Conflict", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9"}], "affected": [{"vendor": "clerk", "product": "astro", "versions": [{"version": ">= 0.0.1, < 1.5.7", "status": "affected"}, {"version": ">= 2.0.0-snapshot.v20241206174604, <= 2.17.9", "status": "affected"}, {"version": ">= 3.0.0, < 3.0.15", "status": "affected"}]}, {"vendor": "clerk", "product": "nextjs", "versions": [{"version": ">= 5.0.0, < 5.7.6", "status": "affected"}, {"version": ">= 6.0.0-snapshot.vb87a27f, < 6.39.2", "status": "affected"}, {"version": ">= 7.0.0, < 7.2.1", "status": "affected"}]}, {"vendor": "clerk", "product": "nuxt", "versions": [{"version": ">= 1.1.0, < 1.13.28", "status": "affected"}, {"version": ">= 2.0.0, < 2.2.2", "status": "affected"}]}, {"vendor": "clerk", "product": "shared", "versions": [{"version": ">= 2.20.17, < 2.22.1", "status": "affected"}, {"version": ">= 3.0.0-canary.v20250225091530, < 3.47.4", "status": "affected"}, {"version": ">= 4.0.0, < 4.8.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-24T21:04:35.810Z"}, "descriptions": [{"lang": "en", "value": "Clerk JavaScript is the official JavaScript repository for Clerk authentication. createRouteMatcher in @clerk/nextjs, @clerk/nuxt, and @clerk/astro can be bypassed by certain crafted requests, allowing them to skip middleware gating and reach downstream handlers. This vulnerability is fixed in @clerk/astro 1.5.7, 2.17.10, and 3.0.15; @clerk/nextjs 5.7.6, 6.39.2, and 7.2.1; @clerk/nuxt 1.13.28 and 2.2.2; and @clerk/shared 2.22.1, 3.47.4, anc 4.8.1"}], "source": {"advisory": "GHSA-vqx2-fgx2-5wq9", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Clerk JavaScript is the official JavaScript repository for Clerk authentication. createRouteMatcher in @clerk/nextjs, @clerk/nuxt, and @clerk/astro can be bypassed by certain crafted requests, allowing them to skip middleware gating and reach downstream handlers. This vulnerability is fixed in @clerk/astro 1.5.7, 2.17.10, and 3.0.15; @clerk/nextjs 5.7.6, 6.39.2, and 7.2.1; @clerk/nuxt 1.13.28 and 2.2.2; and @clerk/shared 2.22.1, 3.47.4, anc 4.8.1"}], "id": "CVE-2026-41248", "lastModified": "2026-04-24T21:16:18.497", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-24T21:16:18.497", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-436"}, {"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}