fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery (CVE-2026-72584) | HOL Guard CVE

High · CVSS 7.4CVE-2026-72584

fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery

Answer in brief

CVE-2026-72584 records a High severity (CVSS 7.4) vulnerability in fastschema - TOCTOU Race Condition Bypasses OTP Attempt Limit in Account Recovery. The current sources do not mark it as known exploited. The current feed maps fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Aug 28, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.4
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps fastschema/fastschema (generic), fastschema/fastschema (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
fastschema/fastschemageneric	>=0 <0.15.1	0.15.1
fastschema/fastschemageneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for fastschema/fastschema, fastschema/fastschema.
Review the reported fix. Update fastschema/fastschema to 0.15.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.