CVE-2026-92985 Details
Description
SiYuan versions before 3.8.4 fail to escape bookmark labels imported from notebook files when rendering them in the dock tree. Attackers can craft malicious .sy notebook files with unescaped HTML in bookmark attributes that execute scripts in the Electron renderer with access to child_process for command execution.
A stored cross-site scripting vulnerability has been identified in SiYuan versions prior to 3.8.4. This issue arises from the application's failure to properly escape bookmark labels imported from crafted .sy notebook files. Attackers can exploit this by embedding unescaped HTML into bookmark attributes, which is then executed as a script in the Electron renderer. The execution has the potential to access child_process, allowing for command execution on the host machine.
Users can update to SiYuan version 3.8.4 or later, where this vulnerability has been patched. For those using the SiYuan API, ensure that bookmark labels are set in a way that escapes HTML characters, preventing the injection of unescaped HTML into the application.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 17, 2026CISA-ADP
Assessed Sep 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jhfc-9mcq-8p8v | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/siyuan-note/siyuan | [email protected] | ProductVendor |
| https://github.com/siyuan-note/siyuan/blob/v3.8.3/app/src/util/Tree.ts#L134 | [email protected] | Source CodeVendor |
| https://github.com/siyuan-note/siyuan/commit/6f093ebe50afc503e2a8b056164293054f8509e7 | [email protected] | Source CodeVendor |
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jhfc-9mcq-8p8v | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/siyuan-before-3.8.4-cross-site-scripting-via-bookmark-labels | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SiYuan | <= 3.8.3 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 17, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2026 | New CVE Received | [email protected] |