CVE-2026-55570

תיאור (מקור, אנגלית)

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, it does not escape the untrusted fields (name, version, author, description) when they are serialized into the data-obj HTML attribute of each marketplace card. Because the attribute is single-quoted and the value is produced with JSON.stringify() (which does not escape ', <, or >), a package whose name contains a single quote breaks out of the attribute and injects arbitrary HTML. In the desktop client the main BrowserWindow runs with nodeIntegration: true, contextIsolation: false, so the injected markup escalates from DOM XSS to arbitrary OS command execution. This is the same root cause and same impact as the original advisory, reached through a sibling sink the patch did not cover. This vulnerability is fixed in 3.7.0.

מדדים

CVSS 3.1

9.0 (CRITICAL) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS — סבירות ניצול

0% (אחוזון 000) נכון ל-14/8/2026

CWE

CWE-79, CWE-94, CWE-116

קישורים

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x88j-wgpr-h22x
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x88j-wgpr-h22x