🚨 CVE-2026-34449: CRITICAL RCE in SiYuan (<3.6.2) via permissive CORS. Visiting a malicious site while SiYuan runs allows OS-level code exec. Patch to 3.6.2+ ASAP! https://radar.offseq.com/threat/cve-2026-34449-cwe-942-permissive-cross-domain-pol-0cb7b35e #OffSeq #SiYuan #CVE202634449 #RCE #InfoSec