Jackson Security

cxcscmu/skilllearnbench-jackson-security

Security considerations for Jackson JSON deserialization in Java applications. This skill covers common attack patterns such as the Empty Key ("") attack vector, polymorphic type handling, nested injection, and duplicate keys, along with their root causes and recommended mitigation strategies. It provides essential background knowledge and is highly useful for addressing related security vulnerabilities. It is always recommended to invoke this skill before working on relevant security fixes.

1k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/cxcscmu/SkillLearnBench --skill jackson-security

How to use it

Copy the folder

Take cxcscmu/skilllearnbench-jackson-security from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.