ajp-ghostcat

ajp-ghostcat is a skill for Claude Code, Codex from blacklanternsecurity/red-run. It costs 59 tokens per session (5,220 once invoked), scanned A, original, GPL-3.0.

A security-testing skill for checking Apache Tomcat’s Apache JServ Protocol connector for Ghostcat, a known vulnerability that can expose files or enable code execution.

In plain words
What is it for?
Use it during an authorized security assessment of Apache Tomcat systems to test for Ghostcat-related file-reading and remote-code-execution weaknesses.
Why use it?
It helps identify the risk when Tomcat exposes this connector, especially when the service is reachable on port 8009.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/blacklanternsecurity/red-run/ajp-ghostcat
Any agent
npx skills add blacklanternsecurity/red-run --skill ajp-ghostcat
Clone the repo
git clone --depth 1 https://github.com/blacklanternsecurity/red-run

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ajp-ghostcat

README.md
[![agentmods](https://agentmods.dev/badge/skills/blacklanternsecurity/red-run/ajp-ghostcat.svg)](https://agentmods.dev/skills/blacklanternsecurity/red-run/ajp-ghostcat)
Your own site
<a href="https://agentmods.dev/skills/blacklanternsecurity/red-run/ajp-ghostcat"><img src="https://agentmods.dev/badge/skills/blacklanternsecurity/red-run/ajp-ghostcat.svg" alt="Measured on agentmods" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,220 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00059 $0.05220
Opus 5 $0.00030 $0.02610
Sonnet 5 $0.00012 $0.01044
Haiku 4.5 $0.00006 $0.00522

Measured 5d ago against content hash b7bf757defed, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ajp-ghostcat scanned grade A with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo apt install apache2 libapache2-mod-proxy-html

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- curl
skills/web/ajp-ghostcat/SKILL.md · 551 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 551 lines · 59 tokens per session scan A b7bf757defed

Subscribe to this mod's changes

ajp-ghostcat is a skill published in the GitHub repository blacklanternsecurity/red-run (266 stars, last pushed 5mo ago), licensed GPL-3.0. It adds 59 tokens to every session and 5,220 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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