CVE-2026-86712
8.6
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| siyuan-note | siyuan | 0 < 3.8.2 | affected |
Weaknesses
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9rr9-pxr4-gcgc
- 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/blob/v3.8.1/app/src/protyle/util/paste.ts
- https://github.com/siyuan-note/siyuan
- https://www.vulncheck.com/advisories/siyuan-before-3.8.2-remote-code-execution-via-clipboard
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.