VYPR
Unrated severityNVD Advisory· Published Jul 27, 2026· Updated Jul 28, 2026

SiYuan Desktop before v3.7.2 Reflected XSS to RCE via siyuan Protocol

CVE-2026-66395

Description

SiYuan 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.

Affected products

1

Patches

Vulnerability mechanics

References

2

News mentions

0

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