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CVE-2026-66395

SiYuan Desktop before v3.7.2 Reflected XSS to RCE via siyuan Protocol

CVSS 4.0 9.4 CRITICALCVSS 3.1 9.6 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-66395

Published

SiYuan desktop before v3.7.2 contains a reflected cross-site scripting vulnerability in the bazaar plugin readme handler that allows attackers to execute arbitrary code by crafting a malicious siyuan:// deep link. Attackers can inject HTML payloads via the plugin name parameter that execute with full Node.js access through insertAdjacentHTML rendering in an insecurely configured Electron renderer.

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Affected versions, risk and source history

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CVE-2026-66395 · CVE overview and exploitation status

cve-program · CVE-2026-66395

Related changes

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 07:12 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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