CVE-2026-3449CWE-705

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

Medium · published March 3, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
5.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
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
EPSS
0.00165 · 5.5th percentile
Weakness
CWE-705 · Incorrect Control Flow Scoping
Published
2026-03-03T05:00Z
EPSS history
Timeline
  • 03 MAR 05:00Z
    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
    cvelistv5