CVE-2026-110861Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit Bypass via Race Condition
Updated under an hour ago ()
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It affects better-auth drizzle-adapter and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-307
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
better-auth drizzle-adapter better_auth:drizzle_adapter (from the name) | from 1.6.17 before 1.7.7; 1.7.7 not affected | CNA record |
better-auth kysely-adapter better_auth:kysely_adapter (from the name) | from 1.6.17 before 1.7.0; 1.7.0 not affected | CNA record |
better-auth better-auth better_auth:better_auth (from the name) | from 1.6.17 before 1.7.7; 1.7.7 not affected | CNA record |
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-44jh-23m7-hpcfvendor-advisory
- https://www.vulncheck.com/advisories/better-auth-drizzle-adapter-1.6.17-before-1.7.7-rate-limit-bypass-via-race-conditionthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.