Is CVE-2026-65606 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-65606 being exploited in the wild.

How severe is CVE-2026-65606?

Critical severity, with a CVSS score of 9.6, published 23 July 2026.

Is there a fix for CVE-2026-65606?

A patch was published on 2026-07-23: Fix confirmed in version 3.7.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-65606 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-65606?

Check whether you run SiYuan at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-65606: SiYuan XSS to RCE in siyuan:// protocol handler

CVE-2026-65606 · Severity: critical · CVSS 9.6 · Published 2026-07-23

SiYuan, a personal knowledge management and note-taking application, is vulnerable to a critical security flaw in how it handles custom links. An attacker can craft a malicious link that, when clicked by a user, executes unauthorized commands on the user's computer. This could allow a remote attacker to steal sensitive data, install malware, or take full control of the affected system.

Technologies: SiYuan. Vendors: SiYuan.

Quick answers

Is CVE-2026-65606 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-65606 being exploited in the wild.
How severe is CVE-2026-65606?: Critical severity, with a CVSS score of 9.6, published 23 July 2026.
Which products and versions are affected?: SiYuan < 3.7.2.
Is there a fix for CVE-2026-65606?: A patch was published on 2026-07-23: Fix confirmed in version 3.7.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-65606 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-65606?: Check whether you run SiYuan at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A cross-site scripting (XSS) vulnerability exists in the SiYuan Desktop application's handling of the 'siyuan://' protocol. When the application processes a 'siyuan://plugins/<name>' link where the plugin name does not exist, it opens a custom tab and inserts the 'icon' URL parameter directly into the tab header's innerHTML without proper escaping in 'app/src/layout/Tab.ts'. Because the Electron-based desktop renderer is configured with 'nodeIntegration: true', an attacker can use this XSS to access Node.js primitives. Specifically, an attacker can inject an 'img' tag with an 'onerror' attribute to call 'require(child_process).execSync()', leading to arbitrary command execution. The vulnerability is patched in version 3.7.2.

Affected products

siyuan-note SiYuan < 3.7.2

Timeline

2026-07-10: advisory: GitHub Security Advisory GHSA-wp64-x7qh-h728 published
2026-07-23: disclosed: CVE-2026-65606 published to NVD
2026-07-23: patched: Fix confirmed in version 3.7.2

References

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