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CVE-2026-65606

SiYuan before v3.7.2 Cross-Site Scripting to RCE PUBLISHED

Description (CNA)

SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler. When a siyuan://plugins/<name> link references a name that is not an installed plugin, the application opens a custom tab and inserts the link's icon parameter into the tab header via innerHTML without escaping it (app/src/layout/Tab.ts), allowing injection of an <img onerror=...> element. Because the SiYuan Desktop renderer runs with nodeIntegration:true, the injected JavaScript can access Node's require and call require('child_process').execSync(...), escalating the cross-site scripting into arbitrary operating-system command execution.

Affected (CNA)

Vendor / productVersions
siyuan-note / siyuanaffected 0 before 3.7.2; unaffected 3.7.2

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.