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vuln-cve/data/2026/41xxx/CVE-2026-41248.json
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{
"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"
}
}
]
}
}