CVE-2026-110861
Low
Description
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.
SeverityLow
CVSS3.7
Exploit probability—
Product@better-auth/drizzle-adapter
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-307CWE-307
How to fix
Update
- @better-auth/drizzle-adapter1.7.7 or later
- @better-auth/kysely-adapter1.7.0 or later
- better-auth1.7.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @better-auth/drizzle-adapternpm | 1.6.17 ≤ v < 1.7.7 | 1.7.7 |
| @better-auth/kysely-adapternpm | 1.6.17 ≤ v < 1.7.0 | 1.7.0 |
| better-authnpm | 1.6.17 ≤ v < 1.7.7 | 1.7.7 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.