CVE-2026-3449
4.8
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
Summary
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
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | @tootallnate/once | 0 < 3.0.1 | affected |
Weaknesses
- CWE-705: Incorrect Control Flow Scoping
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612
- https://github.com/TooTallNate/once/issues/8
- https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a
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