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2 vulnerabilities found for oauth-provider by better-auth

CVE-2026-41427 (GCVE-0-2026-41427)

Vulnerability from nvd – Published: 2026-04-24 19:23 – Updated: 2026-04-27 13:42
VLAI?
Title
Better Auth OAuth 2.1 Provider: Unprivileged users can register OAuth clients
Summary
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.
Severity ?
7.1 (High)
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
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
better-auth better-auth Affected: >= 1.4.8-beta.7, < 1.6.5
Affected: >= 1.7.0-beta.0, <= 1.7.0-beta.1
Create a notification for this product.
    better-auth oauth-provider Affected: >= 1.4.8-beta.7, < 1.6.5
Affected: >= 1.7.0-beta.0, <= 1.7.0-beta.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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                "id": "CVE-2026-41427",
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CVE-2026-41427 (GCVE-0-2026-41427)

Vulnerability from cvelistv5 – Published: 2026-04-24 19:23 – Updated: 2026-04-27 13:42
VLAI?
Title
Better Auth OAuth 2.1 Provider: Unprivileged users can register OAuth clients
Summary
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.
Severity ?
7.1 (High)
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
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
better-auth better-auth Affected: >= 1.4.8-beta.7, < 1.6.5
Affected: >= 1.7.0-beta.0, <= 1.7.0-beta.1
Create a notification for this product.
    better-auth oauth-provider Affected: >= 1.4.8-beta.7, < 1.6.5
Affected: >= 1.7.0-beta.0, <= 1.7.0-beta.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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          "shortName": "CISA-ADP"
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