CVE-2026-92986

Summary

SiYuan before 3.8.4 renders document titles as HTML in the backlink dock tree without escaping markup characters. Attackers can set malicious titles through the rename API or crafted notebooks to execute scripts in the Electron renderer with access to child_process for command execution.

Affected Software

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

References

• https://github.com/siyuan-note/siyuan/commit/6f093ebe50afc503e2a8b056164293054f8509e7
• https://github.com/siyuan-note/siyuan
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c5h9-g2c6-fxjw
• https://github.com/siyuan-note/siyuan/blob/v3.8.3/app/src/util/Tree.ts#L134
• https://www.vulncheck.com/advisories/siyuan-before-3.8.4-cross-site-scripting-via-document-title

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