cross-domain-attack-chain

cross-domain-attack-chain is a skill for Claude Code, Codex from wgpsec/AboutSecurity. It costs 138 tokens per session (1,872 once invoked), scanned A, original, no licence file.

A security-testing method for systems that combine traditional websites with AI or large language model components. It maps attacks that move from the website into the AI system, and from the AI system back into the website.

In plain words
What is it for?
Use it to assess cross-system attack paths involving XSS, SSRF, SQL injection, file uploads, retrieval-augmented generation (RAG), AI agents, and model-connected tools.
Why use it?
It helps reveal risks that a separate web or AI review could miss, such as stolen conversations, poisoned retrieval data, unsafe commands, or sensitive files exposed through connected tools.

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/wgpsec/aboutsecurity/cross-domain-attack-chain
Any agent
npx skills add wgpsec/AboutSecurity --skill cross-domain-attack-chain
Clone the repo
git clone --depth 1 https://github.com/wgpsec/AboutSecurity

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 cross-domain-attack-chain

README.md
[![agentmods](https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/cross-domain-attack-chain.svg)](https://agentmods.dev/skills/wgpsec/aboutsecurity/cross-domain-attack-chain)
Your own site
<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/cross-domain-attack-chain"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/cross-domain-attack-chain.svg" alt="Measured on agentmods" height="20"></a>
Per session 138 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,872 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 5.1 $0.00138 $0.01872
Opus 5 $0.00069 $0.00936
Sonnet 5 $0.00028 $0.00374
Haiku 4.5 $0.00014 $0.00187

Measured 6d ago against content hash c47a1901b062, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

cross-domain-attack-chain scanned grade A with 0 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 6d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/ai-security/cross-domain-attack-chain/SKILL.md · 97 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 6d ago First seen · 97 lines · 138 tokens per session scan A c47a1901b062

Subscribe to this mod's changes

cross-domain-attack-chain is a skill published in the GitHub repository wgpsec/AboutSecurity (1,716 stars, last pushed 5d ago), with no licence file. It adds 138 tokens to every session and 1,872 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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