{"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": "2026-04-27T13:46:28.646Z"}, "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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-27T13:46:14.373183Z", "id": "CVE-2026-41248", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-27T13:46:28.646Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-41248", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-27T13:46:14.373183Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-27T13:46:23.286Z"}}], "cna": {"title": "Official Clerk JavaScript SDKs: Middleware-based route protection bypass", "source": {"advisory": "GHSA-vqx2-fgx2-5wq9", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "clerk", "product": "astro", "versions": [{"status": "affected", "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"}]}, {"vendor": "clerk", "product": "nextjs", "versions": [{"status": "affected", "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"}]}, {"vendor": "clerk", "product": "nuxt", "versions": [{"status": "affected", "version": ">= 1.1.0, < 1.13.28"}, {"status": "affected", "version": ">= 2.0.0, < 2.2.2"}]}, {"vendor": "clerk", "product": "shared", "versions": [{"status": "affected", "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"}]}], "references": [{"url": "https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9", "name": "https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9", "tags": ["x_refsource_CONFIRM"]}], "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"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-436", "description": "CWE-436: Interpretation Conflict"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-24T21:04:35.810Z"}}}, "cveMetadata": {"cveId": "CVE-2026-41248", "state": "PUBLISHED", "dateUpdated": "2026-04-27T13:46:28.646Z", "dateReserved": "2026-04-18T03:47:03.136Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-04-24T21:04:35.810Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"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": "2026-04-27T18:57:20.293", "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": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-436"}, {"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}