cvedb.io
CVE-2026-56397
CRITICAL · CVSS 9.6
EPSS exploitation probability: 31%
Published 2026-06-21T14:16:26.783 · Last modified 2026-06-24T17:17:31.030

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. 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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.