CVE-2026-3449
@tootallnate/once: @tootallnate/once: Denial of Service due to incorrect control flow scoping with AbortSignal
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 3, 2026
Updated · August 18, 2026
Description
A flaw was found in @tootallnate/once. When the AbortSignal option is used, a Promise can remain in a permanently pending state after the signal is aborted. This incorrect control flow scoping can lead to stalled requests, blocked workers, or degraded application availability.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-1322 · Use of Blocking Code in Single-threaded, Non-blocking Context