CVE-2026-67332
@better-auth/oauth-provider before 1.7.0-beta.4 Authorization Bypass
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
@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 covered, bypassing intended authorization boundaries.
| CWE | CWE-285 |
| Vendor | better-auth |
| Product | oauth-provider |
| Published | Aug 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
better-auth / oauth-provider
1.4.8 < 1.7.0-beta.4
References
Credits
🔍 dvanmali