SiYuan Note up to 3.7.3 Hover Tooltip Generation app/src/util/pathName.ts getLeaf/movePathTo bookmark/alias/memo/alternate name field cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in SiYuan Note SiYuan up to 3.7.3. Affected by this vulnerability is the function getLeaf/movePathTo of the file app/src/util/pathName.ts of the component Hover Tooltip Generation. Such manipulation of the argument bookmark/alias/memo/alternate name field leads to cross site scripting. This vulnerability is traded as CVE-2026-75917. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in SiYuan Note SiYuan up to 3.7.3. It has been rated as problematic. Affected by this issue is the function getLeaf/movePathTo of the file app/src/util/pathName.ts of the component Hover Tooltip Generation. The manipulation of the argument bookmark/alias/memo/alternate name field with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file-tree picker's hover-tooltip generation (app/src/util/pathName.ts, getLeaf()/movePathTo()) used by the 'move/link to' path-selection dialogs, where document metadata fields (bookmark, alias, memo, and an alternate name field) are concatenated into the aria-label HTML attribute without escaping. A document crafted with a double quote in any of these fields breaks out of the attribute context and injects arbitrary HTML attributes including inline event handlers (e.g., onmouseover). Because every SiYuan Electron BrowserWindow runs with nodeIntegration:true, contextIsolation:false, and no CSP, the injected handler gains require('child_process') access, escalating the XSS to arbitrary OS command execution when a victim merely hovers over the malicious document entry in the path-picker dialog. Malicious documents reach victims via sharing, sync, or import.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-75917 since 08/18/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 3.7.4 eliminates this vulnerability.

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Productinfo

Vendor

• SiYuan Note

Name

• SiYuan

Version

• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3

CPE 2.3info

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CPE 2.2info

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