HIGH 8.6 NVD
CVE-2026-74801
SiYuan before 3.7.4 fails to properly escape workspace directory paths when constructing command-line arguments for the elevated elevator.exe helper process. At
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.
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vmp7-pm7g-ghcc
- https://www.vulncheck.com/advisories/siyuan-before-local-privilege-escalation-via-elevator
This high severity vulnerability with a CVSS score of 8.6 was published on 2026-08-17 via NVD.
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