hunting-broken-object-level-authorization SKILL.md skillA
hunting-broken-object-level-authorization from unboundcompute/security-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add unboundcompute/security-agent-skills/hunting-broken-object-level-authorization@git:20260819.0218064Pins git:20260819.0218064 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/hunting-broken-object-level-authorization/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260819.0218064, committed Aug 19, 2026
- Size
- 8,545 bytes
- Repository stars
- 26
- License
- MIT
Hunt broken object-level authorization (BOLA, also called IDOR): endpoints that accept a client-supplied object reference - a numeric id, UUID, key, slug, filename, or an id nested in a request body or token - and read or mutate that object without checking the authenticated caller is entitled to it. Covers direct references, enumerable and guessable ids, references buried in nested or batch payloads, second-order ids stored then trusted later, and ownership checks that run on one path but not…
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
# Hunting broken object-level authorization: follow the id to the access The most common serious API bug is also the simplest: a handler takes an object reference from the client, fetches or mutates that object, and never checks that the caller is allowed to touch *this* object. Authentication passes, the route filter passes, the query runs, and user A reads user B's record by changing one id. The bug is not in the routes that are protected; it is in every access that trusts a client-supplied reference without binding it to the caller. You find it by following the reference from the request to the data access and asking, at the access, what proves this is the caller's object. ## When to use - You are reviewing an API or handler that fetches or changes a record by an id, key, slug, filename, or reference the client supplies. - References travel in the path, query, body, a nested field, a batch item, or a token. - Access control depends on the object belonging to the caller, not just on the caller being logged in. ## Scope check Test object access only in systems you own or are authorized to test, with test …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/hunting-broken-object-level-authorization@sha256:2730c13ba96476a4The line at the top of this page pins the label git:20260819.0218064, 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_gxkclnapkmhq7bak)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 19, 2026.
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 (8545 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
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gxkclnapkmhq7bak GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-broken-object-level-authorization GET https://markdownregistry.com/api/v1/blob/2730c13ba96476a4031cf122822e7c114e84f22ae7ad45c5d6e11723b2ae8d6d
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.