CVE-2026-67332: Improper Authorization

@better-auth/oauth-provider before 1.7.0-beta.4 fails to bind access-token audience to the authorization grant, allowing clients to request tokens for unrelated resources. Attackers can complete an OAuth flow and obtain access tokens whose audience targets resource servers the authorization never...

CVE-2026-53517: Concurrent Execution using Shared Resource with Improper Synchronization

Better Auth is an authentication and authorization library for TypeScript. From 1.4.8-beta.7 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint on the refreshtoken grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing...

CVE-2026-53518: Concurrent Execution using Shared Resource with Improper Synchronization

Better Auth is an authentication and authorization library for TypeScript. From 1.6.0 until 1.6.11, the @better-auth/oauth-provider POST /oauth2/token endpoint for the authorizationcode grant redeems a single-use authorization code through a non-atomic find-then-delete sequence, allowing two...

@inkeep/agents-api (>=0.73.0, <=0.80.6), @inkeep/agents-cli (>=0.73.0, <=0.80.6) +5 more potentially affected by CVE-2026-53517 via @better-auth/oauth-provider (1.6.9)

@better-auth/oauth-provider NPM version 1.6.9 is affected by a known vulnerability. The following packages have a transitive dependency on @better-auth/oauth-provider and may be impacted: - @inkeep/agents-api =0.73.0, =0.73.0, =0.73.1, =0.73.0, =0.73.1, =0.73.1, =0.73.1, =0.80.6 Source cves:...

@inkeep/agents-api (>=0.73.0, <=0.80.6), @inkeep/agents-cli (>=0.73.0, <=0.80.6) +5 more potentially affected by CVE-2026-53517 via @better-auth/oauth-provider (1.6.9)

@better-auth/oauth-provider NPM version 1.6.9 is affected by a known vulnerability. The following packages have a transitive dependency on @better-auth/oauth-provider and may be impacted: - @inkeep/agents-api =0.73.0, =0.73.0, =0.73.1, =0.73.0, =0.73.1, =0.73.1, =0.73.1, =0.80.6 Source cves:...

@anchrd/gate (>=0.28.0, <=0.32.0), @anchrd/gate-api (>=0.1.1, <=0.26.0) +21 more potentially affected by unknown CVE via @better-auth/oauth-provider (>=1.5.5, <=1.6.25)

@better-auth/oauth-provider NPM version =1.5.5, =0.28.0, =0.1.1, =0.0.0-dev-20260121145510, =0.0.0-chat-to-edit-20251119071712, =0.0.0-dev-20260410224321, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712...

@anchrd/gate (>=0.28.0, <=0.32.0), @anchrd/gate-api (>=0.1.1, <=0.26.0) +21 more potentially affected by CVE-2026-67332 via @better-auth/oauth-provider (>=1.5.5, <=1.6.25)

@better-auth/oauth-provider NPM version =1.5.5, =0.28.0, =0.1.1, =0.0.0-dev-20260121145510, =0.0.0-chat-to-edit-20251119071712, =0.0.0-dev-20260410224321, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712, =0.0.0-chat-to-edit-20251119071712...