@tootallnate/once vulnerable to Incorrect Control Flow Scoping (CVE-2026-3449) | HOL Guard CVE

Low · CVSS 3.3CVE-2026-3449GHSA-VPQ2-C234-7XJ6

@tootallnate/once vulnerable to Incorrect Control Flow Scoping

Answer in brief

CVE-2026-3449 records a Low severity (CVSS 3.3) vulnerability in @tootallnate/once vulnerable to Incorrect Control Flow Scoping. The current sources do not mark it as known exploited. The current feed maps @tootallnate/once (npm), @tootallnate/once (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Mar 3, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.3
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 3.3. 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 @tootallnate/once (npm), @tootallnate/once (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
@tootallnate/oncenpm	>=3.0.0 <3.0.1	3.0.1
@tootallnate/oncenpm	>=0 <2.0.1	2.0.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for @tootallnate/once, @tootallnate/once.
Review the reported fix. Update @tootallnate/once to 3.0.1; @tootallnate/once to 2.0.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 3, 2026
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

Versions of the package @tootallnate/once before 3.0.1 are vulnerable to Incorrect Control Flow Scoping in promise resolving when AbortSignal option is used. The Promise remains in a permanently pending state after the signal is aborted, causing any await or .then() usage to hang indefinitely. This can cause a control-flow leak that can lead to stalled requests, blocked workers, or degraded application availability.

Quoted source text, attributed separately from HOL analysis.