CVE-2026-54759
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk17th percentile — higher than 17% of all known CVEs
Summary
SiYuan is an open-source personal knowledge management system. Prior to version 3.7.0, Lute's HTML sanitizer does not remove <iframe> elements, allowing an attacker to include a malicious <iframe> in a Bazaar package README that executes arbitrary commands on the victim's machine.
Risk Assessment
An attacker can exploit this vulnerability to execute commands remotely on the victim's computer, posing a serious threat to the security of the system and user data.
Recommendation
It is recommended to update SiYuan to version 3.7.0 or later to eliminate this vulnerability. Additionally, it is advisable to review the security configuration of the SiYuan Electron client.
Original NVD description (English source)
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove <iframe> elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious <iframe> in a Bazaar package README that executes arbitrary commands on the victim's machine when the package details are viewed. No package installation is required. This vulnerability is fixed in 3.7.0.