CVE-2026-110861
CVE-2026-110861 · Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit Bypass via Race Condition
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.3 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
drizzle-adapter
- Versions
- ≥ 1.6.17, < 1.7.7: Affected (semver)
- 1.7.7: Not affected (semver)
Update to 1.7.7
kysely-adapter
- Versions
- ≥ 1.6.17, < 1.7.0: Affected (semver)
- 1.7.0: Not affected (semver)
Update to 1.7.0
better-auth
- Versions
- ≥ 1.6.17, < 1.7.7: Affected (semver)
- 1.7.7: Not affected (semver)
Update to 1.7.7