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IDOR Vulnerability Testing · lingxling | DecimalAI

securityby lingxling

IDOR Vulnerability Testing

lingxling/idor-testing

Source lingxling/awesome-skills-cn ↗License MIT

Provide systematic methodologies for identifying and exploiting Insecure Direct Object Reference (IDOR) vulnerabilities in web applications.

NewMaintained

Automatic

Security & AppSec pack

Last verified 8/28/2026

What it changes

Passed 17 of 22 test cases with the skill, and 17 of 22 without it.

Without skill77%

With skill77%

Checks it passed that the model alone missed

Filters the Receipt object query by both receipt_id and user=request.user
Returns an HttpResponseNotFound status when no matching receipt exists for the user

1 fixed16 passed either way4 still failing1 broke

Pass-rate lift: 0 pp
Tokens: +116%
Agent turns: 0%
Response time: +7%

Model gemini-3.6-flashMeasured 8/28/2026v117 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/lingxling-idor-testing/SKILL.md https://app.decimal.ai/s/lingxling-idor-testing/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add lingxling-idor-testing, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/lingxling-idor-testing/ and pins it in .decimal/skills.lock

decimalai skills add lingxling-idor-testing

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/lingxling-idor-testing/SKILL.md https://app.decimal.ai/s/lingxling-idor-testing/SKILL.md

Raw file: /s/lingxling-idor-testing/SKILL.md ↗ · machine-readable summary at /s/lingxling-idor-testing.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

A test case the skill fixed. Same model, same prompt, with and without the skill.

Prompt

Provide a Django view implementation for download_receipt(request, receipt_id) that prevents unauthorized access to static PDF receipts.

What was checked, without and with the skill
Checked	Without skill	With skill
Filters the Receipt object query by both receipt_id and user=request.user	Missed	Passed
Returns an HttpResponseNotFound status when no matching receipt exists for the user	Missed	Passed

case-22 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md439 linessingle file

AUTHORIZED USE ONLY: Use this skill only for authorized security assessments, defensive validation, or controlled educational environments.

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
Remediation Recommendations: Specific fixes for identified vulnerabilities

Core Workflow

1. Understand IDOR Vulnerability Types

Direct Reference to Database Objects

Occurs when applications reference database records via user-controllable parameters:

# Original URL (authenticated as User A)
example.com/user/profile?id=2023

# Manipulation attempt (accessing User B's data)
example.com/user/profile?id=2022

Direct Reference to Static Files

Occurs when applications expose file paths or names that can be enumerated:

Track record

Benchmark

17 / 22

test cases passed, vs 17 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

lingxling / awesome-skills-cn

antigravity-awesome-skills/skills/idor-testing/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

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Published skills whose descriptions closely match this one, with their headline benchmark lift.

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

IDOR Vulnerability Testing

Purpose

Inputs / Prerequisites

Outputs / Deliverables

Core Workflow

1. Understand IDOR Vulnerability Types

Direct Reference to Database Objects

Direct Reference to Static Files

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills