Description
SiYuan is a personal knowledge management system. Prior to version 3.5.9, an unauthenticated reflected XSS vulnerability exists in the dynamic icon API endpoint "GET /api/icon/getDynamicIcon" when type=8, attacker-controlled content is embedded into SVG output without escaping. Because the endpoint is unauthenticated and returns image/svg+xml, a crafted URL can inject executable SVG/HTML event handlers (for example onerror) and run JavaScript in the SiYuan web origin. This can be chained to perform authenticated API actions and exfiltrate sensitive data when a logged-in user opens the malicious link. This issue has been patched in version 3.5.9.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| github.com/siyuan-note/siyuan/kernel | โ | โ |
| siyuan | โ | 3.5.9 |
References
Similar Threats
- Medium CVE-2026-32704
- High CVE-2026-32110
- Medium CVE-2026-31807
- Medium CVE-2026-31809
- High CVE-2026-30926
Free Vulnerability Check
Is your WordPress site affected?
BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against known CVE records.
Scan My Site Free โNo credit card required ยท Results in minutes
ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.