CVE-2026-29183 Scanner
CVE-2026-29183 Scanner - Cross-Site Scripting (XSS) vulnerability in SiYuan Note
Used 3.1k times · 3.4k assets checked · url
CVE
CVE-2026-29183
6.1
CVSScritical
Exploitable remotely over the internet · no authentication required · user interaction needed.
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.
Attack Vector
Network
Privileges Req.
None
User Interaction
Required
siyuan
Updated Oct 12, 2026View on NVD →
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CVE history: siyuan
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