CVE-2026-41427
- Source
- https://cve.org/CVERecord?id=CVE-2026-41427
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41427.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-41427
- Aliases
- Published
- 2026-04-24T19:23:20Z
- Modified
- 2026-08-12T03:51:21Z
- Severity
-
- 7.1 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- Better Auth OAuth 2.1 Provider: Unprivileged users can register OAuth clients
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-863" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41427.json" }- References
Affected packages
Git / github.com/better-auth/better-auth
Affected ranges
- Type
- GIT
- Repo
- https://github.com/better-auth/better-auth
- Events
-
IntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "cpe": [ "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:*:*" ], "extracted_events": [ { "introduced": "1.4.9" }, { "fixed": "1.6.5" }, { "introduced": "1.4.8-NA" }, { "last_affected": "1.4.8-NA" } ], "source": [ "CPE_RANGE", "CPE_STRING" ] }