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CVE-2026-110861

Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit Bypass via Race Condition PUBLISHED

Description (CNA)

Better Auth @better-auth/drizzle-adapter and better-auth from 1.6.17 before 1.7.7, and @better-auth/kysely-adapter from 1.6.17 before 1.7.0, contain a race condition in database-backed rate limiting on PostgreSQL where the limit check is not atomic with the counter update. Remote attackers can send bursts of concurrent requests that pass the check together, exceeding configured limits on password sign-in, two-factor verification, one-time code, password reset, and other rate-limited endpoints.

Affected (CNA)

Vendor / productVersions
better-auth / drizzle-adapteraffected 1.6.17 before 1.7.7; unaffected 1.7.7
better-auth / kysely-adapteraffected 1.6.17 before 1.7.0; unaffected 1.7.0
better-auth / better-authaffected 1.6.17 before 1.7.7; unaffected 1.7.7

CWE

CWE-307

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.