SiYuan is a personal knowledge management system. Prior to 3.6.4, a malicious note synced to another user can trigger remote code execution in the SiYuan Electron desktop client. The root cause is that table caption content is stored without safe escaping and later unescaped into rendered HTML, creating a stored XSS sink. Because the desktop renderer runs with nodeIntegration enabled and contextIsolation disabled, attacker-controlled JavaScript executes with access to Node.js APIs. In practice, an attacker can import a crafted note into a synced workspace, wait for the victim to sync, and achieve code execution when the victim opens the note. This vulnerability is fixed in 3.6.4.
Metrics
Affected Vendors & Products
References
History
Thu, 16 Apr 2026 04:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
B3log
B3log siyuan |
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| CPEs | cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | |
| Vendors & Products |
B3log
B3log siyuan |
Thu, 09 Apr 2026 08:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Siyuan
Siyuan siyuan |
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| Vendors & Products |
Siyuan
Siyuan siyuan |
Wed, 08 Apr 2026 16:15:00 +0000
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| Metrics |
ssvc
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Tue, 07 Apr 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | SiYuan is a personal knowledge management system. Prior to 3.6.4, a malicious note synced to another user can trigger remote code execution in the SiYuan Electron desktop client. The root cause is that table caption content is stored without safe escaping and later unescaped into rendered HTML, creating a stored XSS sink. Because the desktop renderer runs with nodeIntegration enabled and contextIsolation disabled, attacker-controlled JavaScript executes with access to Node.js APIs. In practice, an attacker can import a crafted note into a synced workspace, wait for the victim to sync, and achieve code execution when the victim opens the note. This vulnerability is fixed in 3.6.4. | |
| Title | SiYuan affected by Remote Code Execution in the Electron desktop client via stored XSS in synced table captions | |
| Weaknesses | CWE-79 CWE-94 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-07T21:34:28.517Z
Updated: 2026-04-08T15:23:37.827Z
Reserved: 2026-04-07T19:13:20.378Z
Link: CVE-2026-39846
Updated: 2026-04-08T15:23:29.101Z
Status : Analyzed
Published: 2026-04-07T22:16:23.597
Modified: 2026-04-16T04:32:01.020
Link: CVE-2026-39846
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