CVE-2026-56397
CriticalCVSS 9.6Exploitation Probability (EPSS)
Low risk31th percentile — higher than 31% of all known CVEs
Summary
SiYuan before v3.6.1 fails to sanitize package metadata and README content in the Bazaar marketplace, allowing malicious package authors to inject arbitrary HTML and JavaScript.
Risk Assessment
Attackers can achieve remote code execution on any user browsing the Bazaar by embedding XSS payloads in package displayName, description, or README fields.
Recommendation
It is recommended to update SiYuan to version 3.6.1 or later and implement additional security measures to protect against XSS injections.
Original NVD description (English source)
SiYuan before v3.6.1 fails to sanitize package metadata and README content in the Bazaar marketplace, allowing malicious package authors to inject arbitrary HTML and JavaScript. Attackers can achieve remote code execution on any user browsing the Bazaar by embedding XSS payloads in package displayName, description, or README fields, exploiting Electron's nodeIntegration setting to execute OS commands.