exploit-xxe
XML External Entity (XXE) injection — local file reading via XML parsers, SOAP/WSDL API exploitation, blind out-of-band exfiltration, SVG/DOCX/XLSX upload XXE. Use for any challenge involving XML processing, SOAP endpoints, WSDL services, or XML-based file upload parsing.
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Critical
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Security
2 findings: 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
This document is an explicit how-to for exploiting XXE vulnerabilities to read sensitive local files and exfiltrate them to attacker-controlled servers (including examples that target credentials and app secrets).
W013: Attempt to modify system services in skill instructions.
What this means
The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.
Why it was flagged
The skill instructs the operator/agent to create files on the host (xxe.svg, crafted XLSX, /tmp/evil.dtd) and to start a background HTTP server (python3 -m http.server), which modifies the agent's machine state to support out‑of‑band exfiltration—even though it does not request sudo or change privileged system files.
- Repository
- PurpleAILAB/Decepticon
- Commit
0cf691e
- Audited
- Security analysis
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