{"id":"CVE-2026-3449","aliases":["GHSA-vpq2-c234-7xj6"],"url":"https://o3.security/vulnerability/CVE-2026-3449","summary":"@tootallnate/once vulnerable to Incorrect Control Flow Scoping","details":"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.","published":"2026-03-03T05:00:01.085Z","modified":"2026-08-07T11:49:20.344432907Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@tootallnate/once","fixedVersion":"3.0.1"},{"ecosystem":"npm","name":"@tootallnate/once","fixedVersion":"2.0.1"}],"fix":{"url":"https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a","label":"TooTallNate/once@b9f43cc"},"references":[{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3449.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3449"},{"type":"REPORT","url":"https://github.com/TooTallNate/once/issues/8"},{"type":"FIX","url":"https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:49:20.344432907Z"}}