CVE-2026-86712: falha de alta gravidade em siyuan-note siyuan
SiYuan before 3.8.2 Remote Code Execution via Clipboard
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Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.6epss 0.7%
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.
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
Produtos afetados
siyuan-note · siyuanCVEs relacionadas — siyuan-note siyuan
No mesmo produto, das mais perigosas para as menos.
CVE-2026-54069CRITICALSiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin AllowlistEPSS 7.5%CVE-2026-54068MEDIUMSiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDynamicIconEPSS 4.3%CVE-2026-33476HIGHSiYuan has an Unauthenticated Arbitrary File Read via Path TraversalEPSS 3.3%CVE-2026-54066HIGHSiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)EPSS 2.2%CVE-2026-69084CRITICALSiYuan before v3.7.3 SQL Injection via searchEmbedBlockEPSS 1.6%CVE-2026-69085CRITICALSiYuan before v3.7.3 SQL Injection via searchDocsEPSS 1.4%
Referências
https://github.com/siyuan-note/siyuanhttps://github.com/siyuan-note/siyuan/blob/v3.8.1/app/src/protyle/util/paste.tshttps://github.com/siyuan-note/siyuan/commit/9ce660652de2ced26ec2d98a5a242cb0b8bb7273https://github.com/siyuan-note/siyuan/releases/tag/v3.8.2https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9rr9-pxr4-gcgchttps://www.vulncheck.com/advisories/siyuan-before-3.8.2-remote-code-execution-via-clipboard