CVE-2026-67332: medium-severity vulnerability in better-auth oauth-provider
@better-auth/oauth-provider before 1.7.0-beta.4 Authorization Bypass
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.3%
@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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products
better-auth · oauth-providerRelated CVEs — better-auth oauth-provider
In the same product, most dangerous first.