@tootallnate/once vulnerable to Incorrect Control Flow Scoping
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @tootallnate/once | >= 3.0.0, < 3.0.1, < 2.0.1 | 3.0.1, 2.0.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-3449
- https://github.com/TooTallNate/once/issues/8
- https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a
- https://github.com/TooTallNate/once
- https://github.com/TooTallNate/once/releases/tag/v2.0.1
- https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L- Weakness (CWE)
CWE-705- Platform
- npm
- Package
@tootallnate/once- Disclosed
- 03.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-vpq2-c234-7xj6 - CC BY 4.0
Vulnerability history: @tootallnate/once
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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