Individual skill
web-cache-poisoning
Unkeyed-input cache poisoning — X-Forwarded-Host/Scheme/Port, X-Original-URL, fat-GET, parameter cloaking, oversized-header DoS, and chains to stored-XSS / open redirect via shared caches.
packages/decepticon/decepticon/skills/standard/exploit/web/web-cache-poisoning/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
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- Observed behavior
- Not checked yet
- Last checked
- Nov 8, 2026
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- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
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- agent Repository topic
- ai Repository topic
- cybersecurity Repository topic
- hacking Repository topic
- langchain Repository topic
- langgraph Repository topic
- llm Repository topic
- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- web-application,-cache,-cdn,-unkeyed-input,-stored-xss Declared skill tag
- engineering Derived category
- security Derived category
- security-application Derived category
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# Web Cache Poisoning Playbook
Distinct from *cache deception* (tricking the cache into storing a victim's
private response). Here, the attacker poisons the **shared** cache so every
subsequent visitor receives an attacker-controlled response. Impact ranges from
defacement → reflected-XSS-as-stored → forced-redirect → DoS.
## 1. Detection — find unkeyed inputs
Definition: an *unkeyed* input is a header/parameter the cache ignores when
building the cache key but the origin reflects into the response.
```bash
URL="https://<TARGET>/"