php-type-juggling

php-type-juggling is a skill for Claude Code, Codex from wgpsec/AboutSecurity. It costs 146 tokens per session (3,009 once invoked), scanned B, original, no licence file.

A security-testing guide for PHP type juggling, where loose comparisons treat different data types as equivalent. It also covers magic hashes, which are hash values that can trigger unsafe comparisons.

In plain words
What is it for?
Use it on PHP login and verification logic involving ==, MD5 or SHA-1 checks, strcmp, JSON input, or numeric validation. It is relevant when responses reveal hashes or the application runs older PHP versions.
Why use it?
It helps find authentication and hash-checking mistakes that may let an attacker bypass a password or verification step. It focuses on PHP comparison and input-validation behavior.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it on PHP login and verification logic involving ==, MD5 or SHA-1 checks, strcmp, JSON input, or numeric validation. It is relevant when responses reveal hashes or the application runs older PHP versions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wgpsec/aboutsecurity/php-type-juggling
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.

Any agent
npx skills add wgpsec/AboutSecurity --skill php-type-juggling
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 php-type-juggling

README.md
[![agentmods](https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/php-type-juggling.svg)](https://agentmods.dev/skills/wgpsec/aboutsecurity/php-type-juggling)
Your own site
<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/php-type-juggling"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/php-type-juggling.svg" alt="Measured on agentmods" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,009 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00146 $0.03009
Opus 5 $0.00073 $0.01504
Sonnet 5 $0.00029 $0.00602
Haiku 4.5 $0.00015 $0.00301

Measured 4d ago against content hash 3f0cd504f1ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

php-type-juggling scanned grade B 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 4d 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s -X POST "$TARGET/index.php" -d "password=$pw" | grep -i "flag\|success\|welcome\|correct\|vault"

Makes network callslowCapability

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

curl -s -X POST "$TARGET/index.php" -d "password=$pw" | grep -i "flag\|success\|welcome\|correct\|vault"
skills/exploit/web-method/php-type-juggling/SKILL.md · 228 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

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 228 lines · 146 tokens per session scan B 3f0cd504f1ec

Subscribe to this mod's changes

php-type-juggling is a skill published in the GitHub repository wgpsec/AboutSecurity (1,721 stars, last pushed 8d ago), with no licence file. It adds 146 tokens to every session and 3,009 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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