CVE-2026-3449

LOW 3.3

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-705
Vendor	n/a
Product	@tootallnate/once
Published	Mar 3, 2026
Last Updated	Mar 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

n/a / @tootallnate/once

0 < 3.0.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

security.snyk.io: https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612 github.com: https://github.com/TooTallNate/once/issues/8 github.com: https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a

Credits

Nanak Singh Khurana