unboundcompute/security-agent-skills · skills/hunting-java-deserialization-gadget-chains/SKILL.md

hunting-java-deserialization-gadget-chains skillA

hunting-java-deserialization-gadget-chains is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt Java deserialization that turns an untrusted byte stream into code execution: attacker-controlled data reaching readObject, an ObjectInputStream, or a framework endpoint that deserializes, with a gadget on the classpath whose readObject or finalizer drives a property-oriented chain to a dangerous call. Covers native serialization, JNDI lookups reached through deserialized objects, and framework entry points that accept a serialized object over HTTP, a message queue, a cache, or a cookie. Us.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/hunting-java-deserialization-gadget-chains@git:20260826.c45369b
Exact content
mdr add unboundcompute/security-agent-skills/hunting-java-deserialization-gadget-chains@sha256:0da80d16deddfda6

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_pfoziwpa5r7wgrjh.svg)](https://markdownregistry.com/a/art_pfoziwpa5r7wgrjh)

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Versions

versioncommittedcommitsizeaudit
git:20260826.c45369b latest2026-08-26 c45369b 9,286 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9286 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

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pfoziwpa5r7wgrjh
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-java-deserialization-gadget-chains
GET https://markdownregistry.com/api/v1/blob/0da80d16deddfda6c1aa49afaa2ed6c4973a90f41b4be4e19554801cae07815e

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.