High severity8.4NVD Advisory· Published Jul 27, 2026· Updated Sep 17, 2026
CVE-2026-66396
CVE-2026-66396
Description
SiYuan before v3.7.2 fails to escape the title-img Individual Attribute List value when rendering Gallery and Kanban cover images, allowing stored cross-site scripting via unescaped style attribute interpolation. Attackers with editor permissions can inject onload handlers that execute arbitrary code in the Electron renderer with full Node.js access when victims open affected documents.
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Affected products
1- Range: <3.7.2
Patches
Vulnerability mechanics
References
2News mentions
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