CVE-2026-55570
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-79
Neutralización incorrecta de la entrada durante la generación de la página web (Cross-site Scripting)
Fecha de publicación:
24/06/2026
Última modificación:
25/06/2026
Descripción
*** Pendiente de traducción *** SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, it does not escape the untrusted fields (name, version, author, description) when they are serialized into the data-obj HTML attribute of each marketplace card. Because the attribute is single-quoted and the value is produced with JSON.stringify() (which does not escape ', ), a package whose name contains a single quote breaks out of the attribute and injects arbitrary HTML. In the desktop client the main BrowserWindow runs with nodeIntegration: true, contextIsolation: false, so the injected markup escalates from DOM XSS to arbitrary OS command execution. This is the same root cause and same impact as the original advisory, reached through a sibling sink the patch did not cover. This vulnerability is fixed in 3.7.0.
Impacto
Puntuación base 3.x
9.00
Gravedad 3.x
CRÍTICA