Critical severity9.6NVD Advisory· Published Jun 21, 2026· Updated Jun 22, 2026

CVE-2026-56395

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Siyuan Note/Siyuaninferred
Range: < 3.6.1

Patches

Vulnerability mechanics

References

github.com/siyuan-note/siyuan/security/advisories/GHSA-v3mg-9v85-fcm7nvd
www.vulncheck.com/advisories/siyuan-remote-code-execution-via-malicious-bazaar-package-metadata-and-readmenvd

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cvss	0.624
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000