23 Oct 2026 15:48:27 UTC
SiYuan Desktop before v3.7.2 Reflected XSS to RCE via siyuan Protocol
cve-program · CVE-2026-66395 · Published
CVE-2026-66395
SiYuan Desktop before v3.7.2 Reflected XSS to RCE via siyuan Protocol
CVSS 4.0 9.4 CRITICALCVSS 3.1 9.6 CRITICALCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-66395
PublishedSiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the bazaar plugin readme handler that allows attackers to execute arbitrary code by crafting a malicious siyuan:// deep link. Attackers can inject HTML payloads via the plugin name parameter that execute with full Node.js access through insertAdjacentHTML rendering in an insecurely configured Electron renderer.
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