CVE-2026-3449

@tootallnate/once · Vulnerability

CVSS 3.1 3.3 LOWCVSS 4.0 4.8 MEDIUMEUVD CVSS 4.0 4.8 CVSS 4.0 · [email protected] · Secondary 1.9 LOWCVSS 3.1 · [email protected] · Secondary 3.3 LOWCVSS_V3 CVSS_V4 Publisher rating LOWFixed by @tootallnate/once 3.0.1 Fixed by @tootallnate/once 2.0.1KEV status unknown

Original advisory

cve-program · CVE-2026-3449

Published

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.

Read the publisher's advisory

euvd · EUVD-2026-9278

Published

Read the publisher's advisory

nvd · CVE-2026-3449

Published

Read the publisher's advisory

osv · GHSA-vpq2-c234-7xj6

Published

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-3449

Published

@tootallnate/once

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "@tootallnate/once",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "3.0.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "vendor": "n/a"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-9278

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Mar 3, 2026, 5:00:01 AM

dateUpdated: May 4, 2026, 5:23:47 AM

3 related source bulletins · separate from aliases

openSUSE-SU-2026:10290-1: heroic-games-launcher-2.20.1-2.1 on GA media

CVE-2026-3449

WID-SEC-W-2026-2118: IBM App Connect Enterprise: Mehrere Schwachstellen

CVE-2026-3449 · CVE-2026-45149 · CVE-2026-45736 · CVE-2026-8723

openSUSE-SU-2026:10429-1: jupyter-jupyterlab-templates-0.5.2-4.1 on GA media

CVE-2026-3449

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-3449

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-705

Original publisher date fields

published: 2026-03-03T05:17:25.017

lastModified: 2026-06-17T10:43:36.317

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-vpq2-c234-7xj6

Published

@tootallnate/once

npm

SEMVER · introduced 3.0.0 → fixed 3.0.1

@tootallnate/once

npm

SEMVER · introduced 0 → fixed 2.0.1

Original source record · Cite this exact observation · Complete original publisher JSON