{"id":"ALPINE-CVE-2026-84042","details":"A flaw was found in crun. When crun is built with libkrun and a container is started rootful with passt networking (krun.use_passt), crun can execute attacker-controlled payload from the container image with host root privileges. The issue is a regression in crun 1.29. It affects crun \u003e= 1.29","modified":"2026-11-03T06:33:04.359232937Z","published":"2026-09-10T09:17:03.260Z","upstream":["CVE-2026-84042"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-84042"}],"affected":[{"package":{"name":"crun","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/crun?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30.1-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-84042.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}