Mehrere Schwachstellen (CVE-2026-33066, CVE-2026-40316, CVE-2026-40922) in Siyuan
Zusammenfassung
In den Versionen 3.6.1 bis 3.6.3 des Open-Source-Persönlichen-Wissensmanagement-Systems SiYuan besteht eine Sicherheitslücke, die es Angreifern ermöglicht, über präparierte Bazaar-Pakete Schadcode auf dem System des Nutzers auszuführen. Der Fehler liegt in der unzureichenden Filterung von iframe-Tags und srcdoc-Attributen im HTML-Sanitizer. Das Problem wurde in Version 3.6.4 behoben.
SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering (incomplete fix for CVE-2026-33066) enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not effectively filter srcdoc attributes which contain raw HTML rather than URLs. A malicious bazaar package author can include an iframe with a srcdoc attribute containing embedded scripts in their README. When other users view the package in SiYuan's marketplace UI, the payload executes in the Electron context with full application privileges, enabling arbitrary code execution on the user's machine. This issue has been fixed in version 3.6.4.
Quelle: app.opencve.io