CVE-2026-65606

SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler. When a siyuan://plugins/<name> link references a name that is not an installed plugin, the application opens a custom tab and inserts the link's icon parameter into the tab header via innerHTML without escaping it (app/src/layout/Tab.ts), allowing injection of an <img onerror=...> element. Because the SiYuan Desktop renderer runs with nodeIntegration:true, the injected JavaScript can access Node's require and call require('child_process').execSync(...), escalating the cross-site scripting into arbitrary operating-system command execution.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wp64-x7qh-h728
https://www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-to-rce
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wp64-x7qh-h728

Configurations

No configuration.

History

23 Jul 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wp64-x7qh-h728 -~~	() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-wp64-x7qh-h728 -

23 Jul 2026, 12:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-23 12:18

Updated : 2026-07-23 16:17

NVD link : CVE-2026-65606

Mitre link : CVE-2026-65606

CVE.ORG link : CVE-2026-65606

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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