High severity8.8NVD Advisory· Published Sep 19, 2026· Updated Sep 19, 2026

CVE-2026-93922

Description

SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.

Patches

Vulnerability mechanics

References

github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.tsnvd
github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.gonvd
github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqmnvd
www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-namesnvd

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