idor-testing SKILL.md skillA
idor-testing from zebbern/claude-code-guide is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add zebbern/claude-code-guide/idor-testing@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- zebbern/claude-code-guide
- Path
skills/idor-testing/SKILL.md- Versions recorded
- 3
- Latest version
- v1.1, committed May 31, 2026
- First version recorded
- Jan 4, 2026
- Size
- 12,589 bytes
- Repository stars
- 4,700
- License
- MIT
This skill should be used when the user asks to "test for insecure direct object references," "find IDOR vulnerabilities," "exploit broken access control," "enumerate user IDs or object references," or "bypass authorization to access other users' data." It provides comprehensive guidance for detecting, exploiting, and remediating IDOR vulnerabilities in web applications.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# IDOR Vulnerability Testing ## Purpose Provide systematic methodologies for identifying and exploiting Insecure Direct Object Reference (IDOR) vulnerabilities in web applications. This skill covers both database object references and static file references, detection techniques using parameter manipulation and enumeration, exploitation via Burp Suite, and remediation strategies for securing applications against unauthorized access. ## Inputs / Prerequisites - **Target Web Application**: URL of application with user-specific resources - **Multiple User Accounts**: At least two test accounts to verify cross-user access - **Burp Suite or Proxy Tool**: Intercepting proxy for request manipulation - **Authorization**: Written permission for security testing - **Understanding of Application Flow**: Knowledge of how objects are referenced (IDs, filenames) ## Outputs / Deliverables - **IDOR Vulnerability Report**: Documentation of discovered access control bypasses - **Proof of Concept**: Evidence of unauthorized data access across user contexts - **Affected Endpoints**: List of vulnerable API endpoints and parameters - **Impact Assessment**: Classification of data exposure severity …
Read the whole file at its exact version.
How to install
mdr add zebbern/claude-code-guide/idor-testing@sha256:6f7c16c24bdf8bf5The line at the top of this page pins the label v1.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_hbwtpi2fm2nmpeu7)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jan 4, 2026 and May 31, 2026, about one every 74 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1 latest | 2026-05-31 | 164971d | 12,589 B | A | view · diff |
| v1.1 | 2026-01-20 | 27bf883 | 12,603 B | A | view · diff |
| git:20260104.9174e17 | 2026-01-04 | 9174e17 | 12,558 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12589 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
zebbern/claude-code-guide · 4,700 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hbwtpi2fm2nmpeu7 GET https://markdownregistry.com/api/v1/resolve?ref=zebbern/claude-code-guide/idor-testing GET https://markdownregistry.com/api/v1/blob/6f7c16c24bdf8bf5e95b825c8df105a21851a943705563bde553a908f9963754
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.