{"id":"CVE-2026-41248","revision":"f80203116b4245fe9147fbb60eaaf5d5","records":[{"revision":"f80203116b4245fe9147fbb60eaaf5d5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-41248","aliases":[],"title":"Official Clerk JavaScript SDKs:  Middleware-based route protection bypass","description":"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","state":0,"publishedAt":"2026-04-24T21:04:35.81+00:00","modifiedAt":"2026-04-27T13:46:28.646+00:00","affected":[{"ecosystem":"Vendor product","name":"astro","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"clerk\",\n                    \"product\": \"astro\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.0.1, < 1.5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0-snapshot.v20241206174604, <= 2.17.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.0.0, < 3.0.15\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"nextjs","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"clerk\",\n                    \"product\": \"nextjs\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 5.0.0, < 5.7.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 6.0.0-snapshot.vb87a27f, < 6.39.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 7.0.0, < 7.2.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"nuxt","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"clerk\",\n                    \"product\": \"nuxt\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.1.0, < 1.13.28\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0, < 2.2.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"shared","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"clerk\",\n                    \"product\": \"shared\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.20.17, < 2.22.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.0.0-canary.v20250225091530, < 3.47.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 4.0.0, < 4.8.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/clerk/javascript/security/advisories/GHSA-vqx2-fgx2-5wq9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41248","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-41248","identifiers":["CVE-2026-41248"]},"retained":false,"historicalAffected":[]}],"coverage":[]}