CVE-2026-34585
HighSummary
SiYuan to system zarządzania wiedzą osobistą. Przed wersją 3.6.2 istniała podatność, która pozwalała na obejście serwerowego eskapowania atrybutów HTML, co prowadziło do wstrzyknięcia złośliwego kodu JavaScript i umożliwiało atak XSS.
Risk Assessment
Atakujący mógł wykorzystać tę podatność do zdalnego wykonania kodu, co stwarza poważne zagrożenie dla bezpieczeństwa systemu i danych użytkowników. W przypadku aplikacji klienckiej Electron, złośliwy kod miał dostęp do API Node/Electron, co zwiększało ryzyko.
Recommendation
Zaleca się aktualizację SiYuan do wersji 3.6.2 lub nowszej, aby usunąć tę podatność. Dodatkowo, warto przeprowadzić audyt bezpieczeństwa w celu zidentyfikowania potencjalnych zagrożeń związanych z wstrzyknięciem kodu.
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Original NVD description (English source)
SiYuan is a personal knowledge management system. Prior to version 3.6.2, a vulnerability allows crafted block attribute values to bypass server-side attribute escaping when an HTML entity is mixed with raw special characters. An attacker can embed a malicious IAL value inside a .sy document, package it as a .sy.zip, and have the victim import it through the normal Import -> SiYuan .sy.zip workflow. Once the note is opened, the malicious attribute breaks out of its original HTML context and injects an event handler, resulting in stored XSS. In the Electron desktop client, this XSS reaches remote code execution because injected JavaScript runs with access to Node/Electron APIs. This issue has been patched in version 3.6.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

