Description
SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the backend renderREADME function uses lute.New() without calling SetSanitize(true), allowing raw HTML embedded in Markdown to pass through unmodified. The frontend then assigns the rendered HTML to innerHTML without any additional sanitization. A malicious package author can embed arbitrary JavaScript in their README that executes when a user clicks to view the package details. Because SiYuan's Electron configuration enables nodeIntegration: true with contextIsolation: false, this XSS escalates directly to full Remote Code Execution. The issue was patched in version 3.6.1.
INFO
Published Date :
2026-03-20T08:11:52.675Z
Last Modified :
2026-03-20T21:23:07.778Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-33066 vulnerability.
| Vendors | Products |
|---|---|
| B3log |
|
| Siyuan |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33066.
