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cpe:2.3:a:@better-auth:oauth-provider:*:*:*:*:*:*:*:*

part: a version: * update: *

Vendor@Better Auth (89fe5bf2-a8c5-517f-918c-0e44e54f0594)
ProductOauth Provider (de37b39d-c98b-56f4-9675-8739582eacd5)
Edition*
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NotesImported from gcve-enriched-dumps CVE data

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2026-53517 vulnerable 2026-07-29 01:00:27.056895 Better Auth OAuth Provider: Refresh Token Rotation Race Condition Allows Concurrent Replay and Token Family Forking
HIGH (8.1)
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 refresh_token grant performs a non-atomic read, validate, revoke, and mint sequence on the oauthRefreshToken row, allowing concurrent requests with the same parent refresh token to pass the revoked check and create forked refresh-token families; the vulnerable range also includes embedded better-auth plugin versions before 1.6.0. This issue is fixed in version 1.6.11.
Published: 2026-07-15T17:33:38.943Z
Updated: 2026-07-15T19:21:22.553Z
Reference links
Imported from gcve-enriched-dumps CVE data

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