unboundcompute/security-agent-skills · skills/hunting-php-object-injection-pop-chains/SKILL.md

hunting-php-object-injection-pop-chains skillA

hunting-php-object-injection-pop-chains is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt PHP object injection where untrusted input reaches unserialize or a framework unserializer and a reachable class carries a magic method that fires during or after reconstruction. Covers native unserialize on request data, cookies, or cache entries, phar deserialization triggered by filesystem functions on an attacker-controlled path, and property-oriented programming chains through __wakeup, __destruct, __toString, and __call that reach a file write, a command, or an SQL sink. Use when a PH.

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-php-object-injection-pop-chains@git:20260826.c45369b
Exact content
mdr add unboundcompute/security-agent-skills/hunting-php-object-injection-pop-chains@sha256:f45c57ebfe19e228

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_gitwqkr6v63zdtwr.svg)](https://markdownregistry.com/a/art_gitwqkr6v63zdtwr)

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Versions

versioncommittedcommitsizeaudit
git:20260826.c45369b latest2026-08-26 c45369b 9,193 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 (9193 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_gitwqkr6v63zdtwr
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-php-object-injection-pop-chains
GET https://markdownregistry.com/api/v1/blob/f45c57ebfe19e2286f6783ecaee3db2766a803a2ae9728352cd72d3626e2316b

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