Individual skill
hunt-csrf
Hunting skill for csrf vulnerabilities. Built from 15 public bug bounty reports including modern variants — SameSite=Lax sibling-subdomain bypass (Argo CD CVE-2024-22424), GraphQL mutations-via-GET (GitLab $3,370), framework-wide CSRF middleware disabled (Stripe Dashboard $5,000), path-traversal CSRF-token bypass (GitHub Enterprise CVE-2022-23732 $10k), Origin-omission bypass (TikTok $2,500), OAuth-state null-byte (Streamlabs), WebSocket CSRF / CSWSH (Coda), default-SameSite email-change → ATO (YoYo Games $400), social-account-link CSRF (HackerOne), JSON-CSRF via text/plain on email-change (TikTok $500). Use when hunting modern CSRF — heavy emphasis on chain-to-ATO patterns.
skills/hunt-csrf/SKILL.md
Source commit d67cc00d9297a15b9210121e0a93c33f9fb6be46
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 5,518
- Repository last updated
- Nov 9, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-security Repository topic
- anthropic Repository topic
- application-security Repository topic
- bug-bounty Repository topic
- bugbounty Repository topic
- bugcrowd Repository topic
- claude Repository topic
- claude-code Repository topic
- claude-skills Repository topic
- ethical-hacking Repository topic
- engineering Derived category
- security Derived category
- security-application Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
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## Shortcut: a raw HTTP client beats a real cross-origin page for header-check CSRF
A raw HTTP client (curl, Burp Repeater, any scripting client) is not a browser: it will send
whatever `Origin`/`Referer` header VALUE you set, from any path, on the same connection as your
authenticated cookie. Many apps that claim to defend against CSRF only do a naive **string check**
on the incoming `Origin`/`Referer` header (does it contain/equal some expected value?) rather than
real same-origin enforcement — you can satisfy that check directly by setting the header, with no
actual cross-site delivery (hosting an HTML page, a headless browser) required. This is faster and
more reliable than building a real attacker page for this exact pattern:
```
POST /profile HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Origin: https://a-domain-the-app-treats-as-trusted-or-attacker-controlled.example
Cookie: <authenticated session>