{"id":"CVE-2026-41427","revision":"8bf0a714dd884d448110cbbbf0be8699","records":[{"revision":"8bf0a714dd884d448110cbbbf0be8699","observedAt":"2026-10-25T09:17:41.905+00:00","statement":{"source":"nvd","id":"CVE-2026-41427","aliases":[],"title":"Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients.…","description":"Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients. Deployments that configured clientPrivileges to restrict client registration were not actually restricted — any authenticated user could reach the create endpoints and register an OAuth client with attacker-chosen redirect URIs and metadata. This vulnerability is fixed in 1.6.5.","state":0,"publishedAt":"2026-04-24T20:16:27.39+00:00","modifiedAt":"2026-06-17T10:46:42.6+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/better-auth/better-auth/security/advisories/GHSA-xr8f-h2gw-9xh6"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41427","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-863"],"productCriteria":["cpe:2.3:a:better-auth:better-auth\\/oauth-provider:*:*:*:*:*:node.js:*:*","cpe:2.3:a:better-auth:better-auth\\/oauth-provider:1.4.8:-:*:*:*:node.js:*:*","cpe:2.3:a:better-auth:better-auth\\/oauth-provider:1.4.8:beta7:*:*:*:node.js:*:*","cpe:2.3:a:better-auth:better-auth\\/oauth-provider:1.7.0:beta0:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-04-24T20:16:27.390","lastModified":"2026-06-17T10:46:42.600"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-41427","identifiers":["CVE-2026-41427"]},"retained":false,"historicalAffected":[]}],"coverage":[]}