CVE-2026-72584: fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
fastschemato a version that resolves this vulnerability.Fixed in v0.15.1Patch fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery
Event History
Frequently Asked Questions
What is the severity of CVE-2026-72584?
The severity of CVE-2026-72584 is high, with a score of 7.4.
How do I fix CVE-2026-72584?
To fix CVE-2026-72584, upgrade fastschema to version 0.15.2 or later where the vulnerability is addressed.
What does CVE-2026-72584 exploit?
CVE-2026-72584 exploits a time-of-check/time-of-use (TOCTOU) race condition that allows attackers to bypass OTP attempt limits.
Who is affected by CVE-2026-72584?
Unauthenticated remote attackers can exploit CVE-2026-72584 to target users during the account recovery process.
What impact does CVE-2026-72584 have on security?
CVE-2026-72584 enables brute-force attacks on 6-digit OTP codes, compromising account recovery security.