offensive-xxe SKILL.md skillC
offensive-xxe from snailsploit/claude-red is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add snailsploit/claude-red/offensive-xxe@git:20260506.70e0c89Pins git:20260506.70e0c89 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 13 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- snailsploit/claude-red
- Path
Skills/web/offensive-xxe/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260506.70e0c89, committed May 6, 2026
- Size
- 28,487 bytes
- Repository stars
- 10,442
- License
- MIT
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# SKILL: XML External Entity (XXE) Injection ## Metadata - **Skill Name**: xxe - **Folder**: offensive-xxe - **Source**: https://github.com/SnailSploit/offensive-checklist/blob/main/xxe.md ## Description XML External Entity injection testing checklist: classic XXE, blind XXE (out-of-band), XXE via file upload (SVG/docx), XXE in SOAP/REST, error-based XXE, XInclude attacks, and XXE filter bypass. Use for web app XXE testing and bug bounty. ## Trigger Phrases Use this skill when the conversation involves any of: `XXE, XML external entity, blind XXE, out-of-band XXE, XXE file upload, SVG XXE, SOAP XXE, XInclude, entity bypass, XXE SSRF, XXE file read` ## Instructions for Claude When this skill is active: 1. Load and apply the full methodology below as your operational checklist 2. Follow steps in order unless the user specifies otherwise 3. For each technique, consider applicability to the current target/context 4. Track which checklist items have been completed 5. Suggest next steps based on findings --- ## Full Methodology # XML External Entity (XXE) Injection ## Shortcut - Find data entry points that you can use to submit XML data. …
Read the whole file at its exact version.
How to install
mdr add snailsploit/claude-red/offensive-xxe@sha256:b56c15801faa3f30The line at the top of this page pins the label git:20260506.70e0c89, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_5k7zxghzl2bhsmkv)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 6, 2026.
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- fail: No link to a raw IP address (matched: http://169.254.169.254)
- pass: Size between 200 bytes and 200 KB (28487 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
snailsploit/claude-red · 10,442 stars · license MIT · pushed 2026-10-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5k7zxghzl2bhsmkv GET https://markdownregistry.com/api/v1/resolve?ref=snailsploit/claude-red/offensive-xxe GET https://markdownregistry.com/api/v1/blob/b56c15801faa3f3046d86071cab344fdda55dd97de266b06ed0bbaae54659685
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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