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Umbraco CMS versions 4.11.8 through 7.15.10, including 7.12.4, allow authenticated administrators to achieve remote code execution by placing an msxsl:script element in an XSLT selection processed through the XSLT Visualizer endpoint.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a Python exploit script (CVE-2019-25137.py) and a README.md for CVE-2019-25137, an authenticated remote code execution (RCE) vulnerability in Umbraco CMS. The exploit requires valid Umbraco credentials and targets the /umbraco/developer/Xslt/xsltVisualize.aspx endpoint, abusing its XSLT processing to inject and execute arbitrary C# code. The script automates the login process, retrieves the necessary CSRF token, crafts a malicious XSLT payload that executes a system command, and posts it to the vulnerable endpoint. The output of the command is extracted from the server's response and displayed to the attacker. The repository is structured simply, with the main exploit logic in a single Python file and a README providing context and attribution. No hardcoded IPs or domains are present; the target is specified at runtime.
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