CVE-2026-93923 [HIGH] – SiYuan through 3.8.4 fails to escape heading style attributes when rendering outline and b

SiYuan through 3.8.4 fails to escape heading style attributes when rendering outline and bookmark dock HTML, allowing stored cross-site scripting. Attackers can supply crafted notebooks or call administrative endpoints to inject malicious style values that execute in the Electron renderer with full system access.