CVE-2026-34449
SiYuan Remote Code Execution via Permissive CORS Policy
Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.
SiYuan, a personal knowledge management system, has a vulnerability that could allow a malicious website to execute arbitrary code on a user's desktop. This occurs when a user visits a compromised website while SiYuan is active, enabling a JavaScript snippet to be injected via the API and run with full OS access. This