Individual skill
hunt-prototype-pollution
Hunt client-side and server-side prototype pollution for XSS, auth bypass, and RCE.
redteam/hunt-prototype-pollution/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.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 1,347
- 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
- redteam Declared skill tag
- prototype-pollution Declared skill tag
- xss Declared skill tag
- rce Declared skill tag
- javascript Declared skill tag
- node.js Declared skill tag
- jquery Declared skill tag
- engineering Derived category
- security Derived category
- security-application Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
Read excerpt
# Prototype Pollution Hunting
Hunt for prototype pollution vulnerabilities where user-supplied properties merge into `Object.prototype`, affecting all objects in the runtime. Client-side pollution enables DOM XSS, cookie manipulation, and auth bypass. Server-side pollution chains to RCE via gadget chains in template engines (EJS, Pug, Handlebars) and CLI wrappers (child_process, NODE_OPTIONS).
## When to Use
- Application uses JavaScript/Node.js with object merge, clone, or extend operations on user input.
- jQuery `$.extend(true, ...)` or `$.fn.merge()` with deep copy on untrusted data.
- Lodash `_.merge()`, `_.defaultsDeep()`, `_.set()` receiving request body/query params.
- Template engines (EJS, Pug, Handlebars) in the same runtime as user-controlled objects.
- Server-side Node.js with `child_process.exec`/`spawn` accessible via polluted options.
## Quick Detection
