Descripción
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.
CVSS 5.3EPSS 0.261%Riesgo 0.54
Ver fuente- Publicación
- 2026-04-17 01:17:40
- Versiones afectadas
- >=3.6.1,<3.6.4
- Tipo
- Installed app
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X