CVE-2026-56397Published

SiYuan - Remote Code Execution via Malicious Bazaar Package Metadata and README

Exact source revision recorded 8 Nov 2026 16:11:25 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-56397

Published

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.

Source published: 21 Jun 2026 13:27:04 UTC
Source modified: 8 Nov 2026 14:06:13 UTC
Observed here: 8 Nov 2026 16:11:25 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS 3.1 · 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H