offensive-xxe SKILL.md skillA
offensive-xxe from miosa-osa/osa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add miosa-osa/osa/offensive-xxe@git:20260914.92db90aPins git:20260914.92db90a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- miosa-osa/osa
- Path
priv/skills/offensive-xxe/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260914.92db90a, committed Sep 14, 2026
- First version recorded
- Sep 13, 2026
- Size
- 1,921 bytes
- Repository stars
- 78
- License
- Apache-2.0
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.
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` <!-- progressive-disclosure --> ## Methodology references Read the relevant sections below before following a technique. Read them in order for the complete original methodology. Confirm the target and testing scope with the user before performing any active checks. - [Full Methodology](references/methodology-01.md) — part 1; consult for this stage and its examples. - [Parameter Entity Testing](references/methodology-02.md) — part 2; consult for this stage and its examples. …
Read the whole file at its exact version.
How to install
mdr add miosa-osa/osa/offensive-xxe@sha256:2f00716a31e3d462The line at the top of this page pins the label git:20260914.92db90a, 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_e5hbu4qtudh57wjs)
7 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 13, 2026 and Sep 14, 2026, more than one a day. Its first recorded version is graded B and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.92db90a latest | 2026-09-14 | 92db90a | 1,921 B | A | view · diff |
| git:20260913.e13b6b8 | 2026-09-13 | e13b6b8 | 29,488 B | B | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1921 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 link to a raw IP address
- pass: No script tag
Source
miosa-osa/osa · 78 stars · license Apache-2.0 · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_e5hbu4qtudh57wjs GET https://markdownregistry.com/api/v1/resolve?ref=miosa-osa/osa/offensive-xxe GET https://markdownregistry.com/api/v1/blob/2f00716a31e3d462ae15e3df9299612e677f738a117c8221e8e38b27117ffc2d
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.