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.
History

Wed, 04 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Tootallnate
Tootallnate once
Vendors & Products Tootallnate
Tootallnate once

Wed, 04 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
Title @tootallnate/once: @tootallnate/once: Denial of Service due to incorrect control flow scoping with AbortSignal
Weaknesses CWE-1322
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 03 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Mar 2026 05:15:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-705
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P'}

cvssV4_0

{'score': 4.8, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-03-03T15:31:46.840Z

Reserved: 2026-03-02T17:14:02.496Z

Link: CVE-2026-3449

cve-icon Vulnrichment

Updated: 2026-03-03T15:31:41.721Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-03T05:17:25.017

Modified: 2026-03-03T21:52:29.877

Link: CVE-2026-3449

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-03T05:00:01Z

Links: CVE-2026-3449 - Bugzilla