{"id":"CVE-2026-74801","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74801","summary":"SiYuan before 3.7.4 fails to properly escape workspace directory paths when constructing command-line arguments for the elevated elevator.exe helper process. Attackers can create a…","details":"SiYuan before 3.7.4 fails to properly escape workspace directory paths when constructing command-line arguments for the elevated elevator.exe helper process. Attackers can create a malicious workspace directory with command metacharacters in its path and trigger the Microsoft Defender exclusion flow to execute arbitrary commands with administrator privileges after UAC approval.","published":"2026-08-17T11:16:40.323","modified":"2026-08-17T11:16:40.323","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vmp7-pm7g-ghcc"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/siyuan-before-local-privilege-escalation-via-elevator-exe"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-17T11:16:40.323"}}