CVE-2026-93922

Summary

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.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm
• https://github.com/siyuan-note/siyuan
• https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72
• https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454
• https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-names

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