{"id":"CVE-2026-3449","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.","aliases":["GHSA-vpq2-c234-7xj6"],"modified":"2026-03-26T09:14:37.088167Z","published":"2026-03-03T05:17:25.017Z","related":["CGA-5jrv-6f42-c3ph","openSUSE-SU-2026:10290-1","openSUSE-SU-2026:10429-1"],"references":[{"type":"WEB","url":"https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612"},{"type":"REPORT","url":"https://github.com/TooTallNate/once/issues/8"},{"type":"FIX","url":"https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/TooTallNate/once","events":[{"introduced":"0"},{"fixed":"b31c7623e18b128325a05da02aa0832ee289b893"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"3.0.1"}]}},{"type":"GIT","repo":"https://github.com/tootallnate/once","events":[{"introduced":"0"},{"fixed":"b9f43cc5259bee2952d91ad3cdbd201a82df448a"}]}],"versions":["1.0.0","1.1.0","1.1.1","1.1.2","2.0.0","3.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3449.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}