CVE-2026-66395Critical· 9.6▾ AbyssalPoC availableSiYuan 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 HT…
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 52.8 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 17.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-66396High· 8.4SiYuan before v3.7.2 fails to escape the title-img Individual Attribute List value when rendering Gallery and Kanban cover images, allowing stored cross-site scripting via unescaped style attribute interpolation
CVE-2026-65605Critical· 9.6SiYuan before v3.7.2 contains a stored cross-site scripting vulnerability in Attribute View (database) cell rendering
CVE-2026-65606Critical· 9.6SiYuan before v3.7.2 contains a cross-site scripting vulnerability in the siyuan:// protocol handler
CVE-2026-92985High· 8.8SiYuan versions before 3.8.4 fail to escape bookmark labels imported from notebook files when rendering them in the dock tree
CVE-2026-87811High· 7.3SiYuan before v3.8.2 inserts persisted notebook template paths into HTML input value attributes without proper attribute encoding
CVE-2026-87813High· 7.3SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the Search Assets result list where asset filenames are interpolated into HTML without escaping