Individual skill
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.
packages/decepticon/decepticon/skills/standard/exploit/web/xxe/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
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- Yes
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- Observed behavior
- Not checked yet
- Last checked
- Nov 8, 2026
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- 6,567
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
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- agent Repository topic
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- pentesting Repository topic
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- web-application,-xxe,-xml,-injection,-soap,-file-read Declared skill tag
- engineering Derived category
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# XML External Entity (XXE) Injection
Exploits XML parsers that process external entity definitions, enabling local file reading, SSRF, or denial of service. Common in SOAP APIs, XML file uploads, SVG processing, and any endpoint accepting XML input.
## Detection
```bash
# Check for XML input acceptance
curl -s 'http://<TARGET>/api' -H 'Content-Type: application/xml' -d '<?xml version="1.0"?><test>hello</test>'
curl -s 'http://<TARGET>/api' -H 'Content-Type: text/xml' -d '<root>test</root>'
# Check for SOAP endpoints
curl -s 'http://<TARGET>/?wsdl'
curl -s 'http://<TARGET>/ws?wsdl'
curl -s 'http://<TARGET>/service?wsdl'