CVE-2026-86712
Dashboard / Vulnerabilities / CVE-2026-86712
Summary: SiYuan before 3.8.2 Remote Code Execution via Clipboard
Details: 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/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86712.json, https://github.com/siyuan-note/siyuan/releases/tag/v3.8.2, https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9rr9-pxr4-gcgc, https://nvd.nist.gov/vuln/detail/CVE-2026-86712, https://www.vulncheck.com/advisories/siyuan-before-3.8.2-remote-code-execution-via-clipboard, https://github.com/siyuan-note/siyuan/commit/9ce660652de2ced26ec2d98a5a242cb0b8bb7273, https://github.com/siyuan-note/siyuan, https://github.com/siyuan-note/siyuan/blob/v3.8.1/app/src/protyle/util/paste.ts
Affected packages
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