{"id":"CLEANSTART-2024-XM31676","summary":"GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed","details":"Security vulnerability affects the grub package. GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed.","modified":"2026-10-31T16:02:58.092225402Z","published":"2026-10-31T14:15:19.493541Z","upstream":["CVE-2020-15705"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-XM31676.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2020-15705"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15705"}],"affected":[{"package":{"name":"grub","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grub"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-XM31676.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}