offensive-parameter-pollution SKILL.md skillB
offensive-parameter-pollution 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-parameter-pollution@git:20260913.e13b6b8Pins git:20260913.e13b6b8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- miosa-osa/osa
- Path
priv/skills/offensive-parameter-pollution/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260913.e13b6b8, committed Sep 13, 2026
- Size
- 17,852 bytes
- Repository stars
- 78
- License
- Apache-2.0
HTTP parameter pollution (HPP) checklist: duplicate parameter injection, backend vs frontend parsing differences, WAF bypass via HPP, server-side vs client-side HPP, and practical exploitation patterns. Use when testing web applications for parameter handling flaws.
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: HTTP Parameter Pollution (HPP)
## Metadata
- **Skill Name**: parameter-pollution
- **Folder**: offensive-parameter-pollution
- **Source**: https://github.com/SnailSploit/offensive-checklist/blob/main/parameter-pollution.md
## Description
HTTP parameter pollution (HPP) checklist: duplicate parameter injection, backend vs frontend parsing differences, WAF bypass via HPP, server-side vs client-side HPP, and practical exploitation patterns. Use when testing web applications for parameter handling flaws.
## Trigger Phrases
Use this skill when the conversation involves any of:
`parameter pollution, HTTP parameter pollution, HPP, duplicate parameter, WAF bypass, parsing differences, server-side HPP, client-side HPP, parameter injection`
## Full Methodology
# HTTP Parameter Pollution (HPP)
## Mechanisms
HTTP Parameter Pollution (HPP) is a web attack technique that exploits how web applications and servers handle multiple occurrences of the same parameter name. When a web application receives duplicate parameters, different technologies process them differently:
```mermaid
flowchart TD
subgraph "HTTP Parameter Pollution"
…Read the whole file at its exact version.
How to install
mdr add miosa-osa/osa/offensive-parameter-pollution@sha256:c7e1f895b17ed49aThe line at the top of this page pins the label git:20260913.e13b6b8, 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_33czh7pfiq6gsz4d)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 13, 2026.
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (17852 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
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
miosa-osa/osa · 78 stars · license Apache-2.0 · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_33czh7pfiq6gsz4d GET https://markdownregistry.com/api/v1/resolve?ref=miosa-osa/osa/offensive-parameter-pollution GET https://markdownregistry.com/api/v1/blob/c7e1f895b17ed49a7abb0c5715a590745e2f2070e47f9360e054c8a9e5929826
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.