{"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"}}]}}