unboundcompute/security-agent-skills · skills/hunting-python-unsafe-deserialization/SKILL.md

hunting-python-unsafe-deserialization skillA

hunting-python-unsafe-deserialization is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt Python deserialization that executes attacker code: untrusted input reaching pickle.loads, an unsafe YAML load, marshal, jsonpickle, dill, or a numpy or pandas loader that unpickles, where the format supports arbitrary object construction through __reduce__ or a tag. Covers pickled data in requests, cookies, caches, message queues, and model or dataframe files, and YAML documents that instantiate arbitrary Python objects. Use when a service loads serialized Python objects it did not produce.

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-python-unsafe-deserialization@git:20260826.c45369b
Exact content
mdr add unboundcompute/security-agent-skills/hunting-python-unsafe-deserialization@sha256:49ad7c153f43796e

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_ecffjw5us7xzsamb.svg)](https://markdownregistry.com/a/art_ecffjw5us7xzsamb)

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Versions

versioncommittedcommitsizeaudit
git:20260826.c45369b latest2026-08-26 c45369b 8,630 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 (8630 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_ecffjw5us7xzsamb
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-python-unsafe-deserialization
GET https://markdownregistry.com/api/v1/blob/49ad7c153f43796e8f345e464bd07e7ca0cc6c5d7795ac9b1c621cfa96a1275d

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