Individual skill
xxe-xml-external-entity
XXE playbook. Use when XML, SVG, OOXML, SOAP, or parser-driven imports may resolve external entities, files, or internal network resources.
knowledge/hack-skills/skills/xxe-xml-external-entity/SKILL.md
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- Network or broad shell
- Last checked
- Nov 4, 2026
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- Nov 5, 2026
- License
- Apache-2.0
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# SKILL: XML External Entity Injection (XXE) — Expert Attack Playbook
> **AI LOAD INSTRUCTION**: Expert XXE techniques. Covers all injection contexts (SOAP, REST JSON→XML parsers, Office files, SVG), OOB exfiltration (critical when direct read fails), blind XXE detection, and XXE-to-SSRF chain. Base models often miss OOB and non-XML context XXE. For real-world CVE chains, Office docx XXE step-by-step, PHP expect:// RCE, and Solr XXE+RCE, load the companion [SCENARIOS.md](./SCENARIOS.md).
## 0. RELATED ROUTING
Also load:
- [upload insecure files](../upload-insecure-files/SKILL.md) when XXE is reachable through SVG, OOXML, import, or preview pipelines
### Extended Scenarios
Also load [SCENARIOS.md](./SCENARIOS.md) when you need:
- Apache Solr XXE + RCE chain (CVE-2017-12629) — XXE to read config, then VelocityResponseWriter for RCE