What is GHSA-x52j-m89g-wh64?

GHSA-x52j-m89g-wh64 is a security advisory published by GitHub Security Advisories with Critical severity. SiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the...

Which CVE IDs does GHSA-x52j-m89g-wh64 cover?

GHSA-x52j-m89g-wh64 covers the following CVE IDs: CVE-2026-66395. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-x52j-m89g-wh64?

GHSA-x52j-m89g-wh64 has a CVSS v3 base score of 9.6, published by GitHub Security Advisories.

GHSA-x52j-m89g-wh64CriticalCVSS 9.6

SiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the...

Vendor

GitHub Security Advisories

Published

July 27, 2026

Last Modified

July 27, 2026

🔗 CVE IDs covered (1)

CVE-2026-66395 →

📋 Description

SiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the bazaar plugin readme handler that allows attackers to execute arbitrary code by crafting a malicious siyuan:// deep link. Attackers can inject HTML payloads via the plugin name parameter that execute with full Node.js access through insertAdjacentHTML rendering in an insecurely configured Electron renderer.

🔗 References (4)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-6gx2-8gcr-x83f
https://nvd.nist.gov/vuln/detail/CVE-2026-66395
https://www.vulncheck.com/advisories/siyuan-desktop-before-reflected-xss-to-rce-via-siyuan-protocol
https://github.com/advisories/GHSA-x52j-m89g-wh64