CVE-2026-3449
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.
- Score
- CVSS 4.0 4.8 Medium
- Status
- Deferred - report@snyk.io
- Published
- 2026-03-03
- Last modified
- 2026-05-04
- Weaknesses
- CWE-705
References
- https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a
- https://github.com/TooTallNate/once/issues/8
- https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612
