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CVE-2026-34449 Detail

Description

SiYuan is a personal knowledge management system. Prior to version 3.6.2, a malicious website can achieve Remote Code Execution (RCE) on any desktop running SiYuan by exploiting the permissive CORS policy (Access-Control-Allow-Origin: * + Access-Control-Allow-Private-Network: true) to inject a JavaScript snippet via the API. The injected snippet executes in Electron's Node.js context with full OS access the next time the user opens SiYuan's UI. No user interaction is required beyond visiting the malicious website while SiYuan is running. This issue has been patched in version 3.6.2.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/siyuan-note/siyuan/issues/17246 GitHub, Inc.
https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2 GitHub, Inc.
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-68p4-j234-43mv GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-942 Permissive Cross-domain Policy with Untrusted Domains GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-34449
NVD Published Date:
03/31/2026
NVD Last Modified:
03/31/2026
Source:
GitHub, Inc.