Xxe Analysis
Hunt XML External Entity flaws in parsers and validate file read / SSRF impact with strict negative controls.
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Install
$ agentstack add skill-mingyiseclab-mingyi-atlas-xxe-analysis ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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XXE Playbook
Find parser sinks
- Java:
DocumentBuilderFactory,SAXParserFactory,XMLInputFactory - Python:
lxml.etree,xml.dom.minidom,xml.sax - .NET:
XmlDocument,XDocument,XmlReader
Dangerous defaults
- DTD enabled
- External entities enabled
- Network/file entity resolution enabled
Payloads
- File read: entity to
file:///etc/passwd - SSRF: entity to internal URL (metadata service, localhost admin)
Validation
- Positive: parser output contains file content or internal response markers.
- Negative: same XML without entity expansion must not leak content.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: MingyiSecLab
- Source: MingyiSecLab/Mingyi-Atlas
- License: Apache-2.0
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.