CVE-2026-92986

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.

  • Published Sep 17, 2026
  • CVSS 8.6 high
  • 0.8% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

CVE-2026-92986 at the National Vulnerability Database