Vulnerabilities in pkg:npm/@tootallnate/once

PACKAGE
Advisory Identifier: GHSA-vpq2-c234-7xj6
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Advisory Summary

CVE-2026-3449 is a LOW (CVSS 3.3) @tootallnate/once vulnerable to incorrect control vulnerability (CWE-705: Incorrect Control Flow Scoping) affecting @tootallnate/once libraries in the npm ecosystem. The issue involves @tootallnate/once vulnerable to incorrect control flow scoping. Remediation is available by upgrading affected packages to version 3.0.1, 2.0.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/@tootallnate/once

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/@tootallnate/once. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-vpq2-c234-7xj6 CVE-2026-3449 LOW @tootallnate/once vulnerable to Incorrect Control Flow Scoping

CVE-2026-3449 at a Glance

CVE Identifier CVE-2026-3449
GHSA Identifier GHSA-vpq2-c234-7xj6
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-705: Incorrect Control Flow Scoping
Affected Product @tootallnate/once
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 3.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix CVE-2026-3449

To remediate this vulnerability, upgrade all affected @tootallnate/once dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

@tootallnate/once fixed: 3.0.1 
npm install @tootallnate/once@3.0.1
@tootallnate/once fixed: 2.0.1 
npm install @tootallnate/once@2.0.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls @tootallnate/once

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-3449, inspect your project dependencies using npm:

npm ls @tootallnate/once

Analyze the terminal output to locate any version of @tootallnate/once in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.1), your application is affected.

Note: The npm ls @tootallnate/once command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-705: Incorrect Control Flow Scoping, where the product does not properly return control flow to the proper location after it has completed a task or detected an unusual condition. In @tootallnate/once, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-3449 Affected @tootallnate/once Versions

2 component(s)
Fixed Versions:
3.0.12.0.1
Product / Package Ecosystem Affected Versions Fixed Version
@tootallnate/once
npm/@tootallnate/once
npm
≥ 3.0.0
< 3.0.1
3.0.1
@tootallnate/once
npm/@tootallnate/once
npm
< 2.0.1
2.0.1

References

NVD — CVE-2026-3449 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3449
@tootallnate/once Source Repository REPOSITORY
https://github.com/TooTallNate/once/issues/8
Security Fix Commit FIX COMMIT
https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a
@tootallnate/once Source Repository REPOSITORY
https://github.com/TooTallNate/once
@tootallnate/once Release RELEASE
https://github.com/TooTallNate/once/releases/tag/v2.0.1
@tootallnate/once Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612

Frequently Asked Questions

What is CVE-2026-3449?
CVE-2026-3449 is a security vulnerability in @tootallnate/once involving @tootallnate/once vulnerable to Incorrect Control Flow Scoping under CWE-705: Incorrect Control Flow Scoping.
Which @tootallnate/once versions are affected?
Affected versions include releases prior to 3.0.1, 2.0.1 across affected packages: @tootallnate/once.
What version fixes CVE-2026-3449?
Upgrading to 3.0.1, 2.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @tootallnate/once affected?
Yes, @tootallnate/once is affected in releases prior to 3.0.1, 2.0.1. Upgrade your dependency to 3.0.1, 2.0.1 or later.
What is the CVSS score of CVE-2026-3449?
CVE-2026-3449 has a CVSS v3.1 base score of 3.3 (LOW) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-3449?
CVE-2026-3449 is classified under CWE-705: Incorrect Control Flow Scoping (The product does not properly return control flow to the proper location after it has completed a task or detected an unusual condition.).
How can I check npm dependencies for CVE-2026-3449?
Run the dependency tree command: 'npm ls @tootallnate/once'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vpq2-c234-7xj6",
  "modified" : "2026-05-21T16:55:49Z",
  "published" : "2026-03-03T06:31:14Z",
  "aliases" : [ "CVE-2026-3449" ],
  "summary" : "@tootallnate/once vulnerable to Incorrect Control Flow Scoping",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@tootallnate/once"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@tootallnate/once"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-3449"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TooTallNate/once/issues/8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TooTallNate/once"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TooTallNate/once/releases/tag/v2.0.1"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-705" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-04T20:15:03Z",
    "nvd_published_at" : "2026-03-03T05:17:25Z"
  }
}