CVE-2026-93922 Details
Description
SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.
A stored cross-site scripting vulnerability has been identified in SiYuan Note versions through 3.8.4. This issue arises because the application renders notebook names as raw HTML in the Daily Note picker dialog without proper escaping. As a result, an attacker can create notebooks with HTML payloads in their names, which are executed as JavaScript in the Electron renderer. This exploitation can lead to remote code execution on the user's operating system.
Users can update to SiYuan version 3.8.5 or later, where this vulnerability has been patched.
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 19, 2026CISA-ADP
Assessed Sep 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/siyuan-note/siyuan | [email protected] | Vendor |
| https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72 | [email protected] | Source CodeVendor |
| https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454 | [email protected] | Source CodeVendor |
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-names | [email protected] | AdvisoryBundleRemedyVendor |
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 | <= 3.8.4 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 22, 2026 | CVE Modified | CISA-ADP |
| Sep 19, 2026 | New CVE Received | [email protected] |