unboundcompute/security-agent-skills · skills/hunting-redos-and-complexity-dos/SKILL.md

hunting-redos-and-complexity-dos skillA

hunting-redos-and-complexity-dos is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt single-request denial of service from super-linear work: untrusted input reaching a backtracking regular expression, a quadratic or worse algorithm, or a hash-keyed structure with attacker-chosen keys, with no size or complexity guard between. Covers regular expressions with nested or ambiguous quantifiers that explode on a crafted non-matching string, accidental nested scans and unbounded parsers over attacker-sized input, repeated string building in a loop, and hash flooding where predict.

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-redos-and-complexity-dos@git:20260821.4f2a732
Exact content
mdr add unboundcompute/security-agent-skills/hunting-redos-and-complexity-dos@sha256:a0de042f1c88b761

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_7gitpdtpfqsbd6ju.svg)](https://markdownregistry.com/a/art_7gitpdtpfqsbd6ju)

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Versions

versioncommittedcommitsizeaudit
git:20260821.4f2a732 latest2026-08-21 4f2a732 9,190 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 (9190 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_7gitpdtpfqsbd6ju
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-redos-and-complexity-dos
GET https://markdownregistry.com/api/v1/blob/a0de042f1c88b761a5c7b464c3862e2fb6f1e2156eac6deefd986b4201a6466e

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