CVE-2026-66395
Critical · CVSS 9.6- CVSS
- 9.6
- nvd
- EPSS
- 0.33%
- 25th pct
- KEV
- No
- Class
- oss containerizable
- CWE-79
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.
References
Status: profiled · ingested 2026-07-28T18:00:19.000Z