Description
SiYuan is a personal knowledge management system. Prior to 3.5.10, SiYuan's SVG sanitizer (SanitizeSVG) blocks dangerous elements (<script>, <iframe>, <foreignobject>) and removes on* event handlers and javascript: in href attributes. However, it does NOT block SVG animation elements (<animate>, <set>) which can dynamically set attributes to dangerous values at runtime, bypassing the static sanitization. This allows an attacker to inject executable JavaScript into the unauthenticated /api/icon/getDynamicIcon endpoint (type=8), creating a reflected XSS. This is a bypass of the fix for CVE-2026-29183 (fixed in v3.5.9). This vulnerability is fixed in v3.5.10.
INFO
Published Date :
2026-03-10T20:56:57.138Z
Last Modified :
2026-03-11T16:00:25.996Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-31807 vulnerability.
| Vendors | Products |
|---|---|
| B3log |
|
| Siyuan |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31807.
