CVE-2026-86712: fallo de gravedad alta en siyuan-note siyuan
SiYuan before 3.8.2 Remote Code Execution via Clipboard
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
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
Productos afectados
siyuan-note · siyuanCVEs relacionadas — siyuan-note siyuan
En el mismo producto, de las más peligrosas a las 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%
Referencias
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