Umbraco CMS 4.11.8 through 7.15.10, and 7.12.4, allows Remote Code Execution by authenticated administrators via msxsl:script in an xsltSelection to developer/Xslt/xsltVisualize.aspx.
A XSLT Server Side injection vulnerability in the Import Jobs function of FireBear Improved Import And Export v3.8.6 allows attackers to execute arbitrary commands via a crafted XSLT file.