auditing-csrf-and-unsafe-state-changes SKILL.md skillA
auditing-csrf-and-unsafe-state-changes 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/auditing-csrf-and-unsafe-state-changes@git:20260903.6dac719Pins git:20260903.6dac719 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/auditing-csrf-and-unsafe-state-changes/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260903.6dac719, committed Sep 3, 2026
- Size
- 10,340 bytes
- Repository stars
- 26
- License
- MIT
Audit state-changing endpoints for cross-site request forgery, where a request that rides the victim's ambient cookies is authorized on that session alone with no unpredictable, session-bound proof the request came from the app, letting an attacker page trigger the change as the victim. Use when reviewing forms and actions that modify data, change settings, move funds, or alter access, and how each is protected. Covers missing or unvalidated tokens, tokens not bound to the session, cookie-only…
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
# Auditing CSRF and unsafe state changes: when the victim's cookies do the attacker's work A browser attaches a site's cookies to every request to that site, whoever caused the request. So when a state-changing endpoint authorizes an action on the session cookie alone, an attacker's page can submit a form or fire a request to that endpoint, the victim's browser attaches the session, and the change happens as the victim without them ever intending it. The defense is proof that the request originated from the app's own pages and not a foreign one: an unpredictable token bound to the session that an attacker cannot guess or read cross-origin, or a cookie policy that withholds the cookie on cross-site requests. The bug is a state change that trusts the cookie and asks for nothing else. You find it by listing every action that mutates state and checking what, beyond the cookie, each one requires. ## When to use - An endpoint changes data, settings, access, or funds and is authorized by a session cookie. - Forms or actions rely on a token, and you need to confirm it is present, validated, and session-bound. …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/auditing-csrf-and-unsafe-state-changes@sha256:8c2a26a966f468d0The line at the top of this page pins the label git:20260903.6dac719, 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_kngpnj7b2eeszqse)
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Versions
The registry has recorded 1 version of this file, committed on Sep 3, 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 (10340 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_kngpnj7b2eeszqse GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-csrf-and-unsafe-state-changes GET https://markdownregistry.com/api/v1/blob/8c2a26a966f468d0a83cdbcf3fbe5ae0e1b5dbf27e46bc59de8f683fafb48a07
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.