Individual skill
hunt-xxe
Hunting skill for xxe vulnerabilities. Built from 10 public bug bounty reports including SVG-upload XXE, Office-doc (PPTX/DOCX) XXE, SOAP XXE, SAML AssertionConsumer XXE, blind OOB XXE via DTD callback, parameter-entity XXE, XXE-to-LFI, XXE-to-SSRF, and XXE-to-RCE chains (Adobe Commerce CosmicSting CVE-2024-34102). Use when hunting XXE on any target — emphasis on OOB-Or-It-Didn't-Happen Gate for blind cases.
redteam/hunt-xxe/SKILL.md
Source commit 1260244136edc6ae698d76d3d526f503e322778d
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 1,366
- Repository last updated
- Nov 7, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- bug-bounty Repository topic
- cloud-security Repository topic
- firebase-hacking Repository topic
- hermes-agent Repository topic
- jwt-attacks Repository topic
- offensive-security Repository topic
- penetration-testing Repository topic
- reconnaissance Repository topic
- red-team Repository topic
- security-automation Repository topic
- xxe Declared skill tag
- hunt Declared skill tag
- redteam Declared skill tag
- engineering Derived category
Files and excerpt
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## Crown Jewel Targets
XXE is a critical-severity vulnerability that consistently pays at the top of bug bounty scales ($5,000–$30,000+) due to its direct path to sensitive data exfiltration and SSRF. Highest-value targets:
- **Large enterprise platforms** with XML-heavy backend integrations (finance, logistics, ride-sharing APIs)
- **Domains with file-read capability** — `/etc/passwd`, `/etc/shadow`, internal config files, AWS metadata endpoints
- **Subdomains sharing backend infrastructure** — one XXE endpoint can pivot to internal services across dozens of domains (as demonstrated by 26+ Uber domains via a single entry point)
- **API gateways** accepting XML content types — especially REST APIs that silently accept `Content-Type: application/xml`
- **File upload features** — SVG, DOCX, XLSX, PDF, PPTX parsers on the server side
- **SAML/SSO endpoints** — SAML assertions are XML-based and frequently vulnerable
- **Office/document processing services** — any feature that converts or processes user-supplied documents
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