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ctf-web

Provides web exploitation techniques for CTF challenges. Use when the target is primarily an HTTP application, API, browser client, template engine, identity flow, or smart-contract frontend/backend surface, including XSS, SQLi, SSTI, SSRF, XXE, JWT, auth bypass, file upload, request smuggling, O...

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Security score

The ctf-web skill was audited on Sep 4, 2026 and we found 8 security issues across 3 threat categories, including 1 critical. Review the findings below before installing.

Categories Tested

Security Issues

medium line 116

Curl to non-GitHub URL

SourceSKILL.md
114```bash
115# Recon
116curl -sI https://target.com
117ffuf -u https://target.com/FUZZ -w wordlist.txt
118curl -s https://target.com/robots.txt
medium line 118

Curl to non-GitHub URL

SourceSKILL.md
116curl -sI https://target.com
117ffuf -u https://target.com/FUZZ -w wordlist.txt
118curl -s https://target.com/robots.txt
119
120# SQLi quick test
medium line 131

Curl to non-GitHub URL

SourceSKILL.md
129
130# SSTI probes
131curl "https://target.com/page?name={{7*7}}"
132curl "https://target.com/page?name={{config}}"
133
medium line 132

Curl to non-GitHub URL

SourceSKILL.md
130# SSTI probes
131curl "https://target.com/page?name={{7*7}}"
132curl "https://target.com/page?name={{config}}"
133
134# Request inspection
medium line 135

Curl to non-GitHub URL

SourceSKILL.md
133
134# Request inspection
135curl -v -X POST https://target.com/api -H "Content-Type: application/json" -d '{}'
136```
137
medium line 175

Upload instruction

SourceSKILL.md
173
174- Recon, SQLi, XSS, traversal, JWT, SSTI, SSRF, XXE, and command injection quick notes
175- Deserialization, race conditions, file upload to RCE, and multi-stage chain examples
176- Node, OAuth/SAML, CI/CD, Web3, bot abuse, CSP bypasses, and modern browser tricks
177- CVE-shaped playbooks and older challenge patterns that still show up in modern CTFs
critical line 62

Jailbreak keyword

SourceSKILL.md
60- [client-side.md](client-side.md) - XSS, CSRF, cache poisoning, DOM tricks, admin bot abuse, request smuggling, paywall bypass
61- [client-side-advanced.md](client-side-advanced.md) - CSP bypasses, Unicode tricks, XSSI, CSS exfiltration, browser normalization quirks, postMessage null origin bypass
62- [auth-and-access.md](auth-and-access.md) - Auth/authz bypasses, hidden endpoints, IDOR, redirect chains, subdomain takeover, AI chatbot jailbreaks
63- [auth-and-access-2.md](auth-and-access-2.md) - Part 2 (2018-era): `std::unordered_set` bucket collision auth bypass, `nodeprep.prepare` Unicode homograph username collision, SRP A=0/A=N auth bypass, ArangoDB AQL MERGE privilege escalation
64- [auth-jwt.md](auth-jwt.md) - JWT/JWE manipulation, weak secrets, header injection, key confusion, replay
medium line 151

Webhook reference

SourceSKILL.md
149- Check obvious metadata and helper paths early: `/robots.txt`, `/sitemap.xml`, `/.well-known/`, `/admin`, `/debug`, `/.git/`, `/.env`.
150- Try alternate verbs and content types on interesting routes: `GET`, `POST`, `PUT`, `PATCH`, `TRACE`, JSON, form, multipart, XML.
151- Treat file upload, PDF/export, webhook, OAuth callback, and admin bot features as likely exploit multipliers.
152
153## Fast Pattern Map
Scanned on Sep 4, 2026
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Categorydevelopment
UpdatedSeptember 27, 2026
yuzu-octopus/ctf-skills