HIGH 8.6 NVD
CVE-2026-86712
SiYuan before 3.8.2 trusts the attacker-writable text/siyuan clipboard MIME type and skips sanitization in the paste handler, allowing code execution in the Nod
SiYuan before 3.8.2 trusts the attacker-writable text/siyuan clipboard MIME type and skips sanitization in the paste handler, allowing code execution in the Node-enabled desktop renderer. Attackers can craft malicious web pages that write to the clipboard, and when pasted into SiYuan, injected scripts execute with full Node.js access through the Electron main process.
References
- https://github.com/siyuan-note/siyuan
- https://github.com/siyuan-note/siyuan/blob/v3.8.1/app/src/protyle/util/paste.ts
- https://github.com/siyuan-note/siyuan/commit/9ce660652de2ced26ec2d98a5a242cb0b8bb7273
- https://github.com/siyuan-note/siyuan/releases/tag/v3.8.2
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9rr9-pxr4-gcgc
This high severity vulnerability with a CVSS score of 8.6 was published on 2026-09-08 via NVD.
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