xmlrpc-exploitation

xmlrpc-exploitation is a skill for Claude Code, Codex from uphiago/recon-skills. It costs 21 tokens per session (4,459 once invoked), scanned A, original, MIT.

A security-testing procedure for WordPress XML-RPC endpoints. XML-RPC is a remote-control interface that lets software call functions on a website.

In plain words
What is it for?
Use it to detect XML-RPC, enumerate methods, test pingback-based server-side request forgery, assess multicall brute-force exposure, and check upload chains when prerequisites exist.
Why use it?
It helps assess whether an exposed endpoint enables amplified login attempts, requests to internal systems, or file-upload-based code execution in an authorized test.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to detect XML-RPC, enumerate methods, test pingback-based server-side request forgery, assess multicall brute-force exposure, and check upload chains when prerequisites exist.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/uphiago/recon-skills/xmlrpc-exploitation
About the project

Recon Skills is a pack of security-testing skills covering reconnaissance, web applications, APIs, authentication, vulnerability validation, cloud infrastructure, and reporting. Security professionals use it for authorized assessments of systems they own or have written permission to test. The catalogue entries are individual skills from the pack.

uphiago/recon-skills · 1,247 stars · on GitHub · hiago.sh

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 uphiago/recon-skills --skill xmlrpc-exploitation
Clone the repo
git clone --depth 1 https://github.com/uphiago/recon-skills

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 xmlrpc-exploitation

README.md
[![agentmods](https://agentmods.dev/badge/skills/uphiago/recon-skills/xmlrpc-exploitation/github.svg)](https://agentmods.dev/skills/uphiago/recon-skills/xmlrpc-exploitation)
Your own site
<a href="https://agentmods.dev/skills/uphiago/recon-skills/xmlrpc-exploitation"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/xmlrpc-exploitation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for xmlrpc-exploitation

Your own site · 80×15
<a href="https://agentmods.dev/skills/uphiago/recon-skills/xmlrpc-exploitation"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/xmlrpc-exploitation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,459 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 11 findings, up to critical

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • critical YARA Match · line 279
    YARA rule matched a known webshell pattern (PHP, Python, JSP, or ASPX webshell).
    Fix: Remove the webshell code immediately. Webshells provide unauthorized remote command execution. Audit the skill for additional backdoors or persistence mechanisms.
  • high Supply Chain · line 97
    Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.
    Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
  • high YARA Match · line 113
    YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).
    Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
  • high Supply Chain · line 115
    Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.
    Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
  • high Privilege Escalation · line 331
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Data Exfiltration · line 44
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 82
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 97
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 115
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 241
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 281
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original 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 $0.00021 $0.04459
Opus 5 $0.00010 $0.02230
Sonnet 5 $0.00004 $0.00892
Haiku 4.5 $0.00002 $0.00446

Measured 9d ago against content hash 06eac1ce0084, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

xmlrpc-exploitation 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 9d 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.

Makes network callslowCapability

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

compatibility: Requires curl, python3

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run(["curl", "-sk", "-X", "POST",
recon/xmlrpc-exploitation/SKILL.md · 341 lines

How it starts

The opening of the file, as written. The whole thing — 341 lines — stays where its author put it; the contents beside it link to each section on GitHub.

XMLRPC Exploitation Skill

5-phase exploitation pipeline for WordPress XMLRPC endpoints. Covers bulk detection, method enumeration, SSRF via pingback.ping, amplified brute force via system.multicall (1000x amplification), and RCE via wp.uploadFile when open registration is present. XMLRPC is open on ~52% of WordPress targets found via wp-mass-recon.

When to Use

  • wp-mass-recon detected XMLRPC returning HTTP 200 on POST.
  • Target has WordPress with open registration (chain: upload → webshell → RCE).
  • Need a brute-force amplification vector for WordPress credentials.
  • Probing for internal SSRF via pingback.ping to cloud metadata endpoints.

Prerequisites

  • terminal with curl.
  • Target has confirmed XMLRPC endpoint (/xmlrpc.php returns 200 on POST with demo.sayHello).
  • For RCE chain: target must have open registration or another file upload path.
  • For SSRF chain: need a Collaborator/Burp Collaborator endpoint or internal target IPs.

How to Run

# Phase 1: Bulk detection on target list
while read -r domain; do
  code=$(curl -sk -o /dev/null -w "%{http_code}" --max-time 10 --connect-timeout 10 -X POST "https://$domain/xmlrpc.php" \
    -d '<?xml version="1.0"?><methodCall><methodName>demo.sayHello</methodName></methodCall>')
  [[ "$code" == "200" ]] && echo "OPEN: $domain"
  sleep 0.3
done < targets.txt

# Phase 2: Deep method enumeration
curl --max-time 30 --connect-timeout 10 -sk -X POST "https://TARGET/xmlrpc.php" \
  -H "Content-Type: text/xml" \
  -d '<?xml version="1.0"?><methodCall><methodName>system.listMethods</methodName></methodCall>'

Quick Reference

Method Capability Severity
demo.sayHello Confirms XMLRPC is alive Info
system.listMethods Enumerate all available methods Info
system.multicall Execute multiple methods in ONE request Critical — 1000x brute force amplification
pingback.ping SSRF — server makes outbound HTTP request High — probe internal network, IMDS
wp.getUsers Enumerate WordPress users Medium
wp.getPosts List published posts Low
wp.uploadFile Upload file to media library Critical — webshell when combined with open reg
wp.getOptions Read WordPress options (siteurl, admin_email) Medium
wp.getPostStatusList Get post statuses Low

Read the full file on GitHub · 341 lines

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. 9d ago First seen · 341 lines · 21 tokens per session scan A 06eac1ce0084

Subscribe to this mod's changes

xmlrpc-exploitation is a skill published in the GitHub repository uphiago/recon-skills (1,247 stars, last pushed 7d ago), licensed MIT. It adds 21 tokens to every session and 4,459 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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