CVE-2026-72584: Fastschema

High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days.

A time-of-check/time-of-use (TOCTOU) race condition in fastschema through v0.15.1 allows an unauthenticated remote attacker to bypass the OTP attempt limit on the account recovery flow, enabling brute-force attacks on 6-digit OTP codes.

Affected products

• Fastschema Fastschema: up to and including 0.15.1

Published 2026-08-10. Last modified 2026-08-28.