CVE-2026-100643
SiYuan versions before v3.8.4 fail to properly escape four stored Attribute View values in textarea…
- Risk score
- 55/100
- CVSS
- 8.0 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 26 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- SiYuan versions before v3.8.4 fail to properly escape four stored Attribute View values in textarea elements, allowing authenticated attackers to inject JavaScript by modifying field descriptions, template sources, select option descriptions, or footer calculation templates. Attackers can execute stored JavaScript whe…
- Affected
- See advisory
- Fix
- Upgrade the product to 3.8.4 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.0 high
References
Original description
SiYuan versions before v3.8.4 fail to properly escape four stored Attribute View values in textarea elements, allowing authenticated attackers to inject JavaScript by modifying field descriptions, template sources, select option descriptions, or footer calculation templates. Attackers can execute stored JavaScript when other users open affected database menus, and in the Electron desktop app with nodeIntegration enabled, this leads to command execution with SiYuan process privileges.
Last activity 26 Sep 2026. Patch Forecast updates every hour.