Individual skill
performing-web-cache-poisoning-attack
Exploiting web cache mechanisms to serve malicious content to other users by poisoning cached responses through unkeyed headers and parameters during authorized security tests.
internal/tools/skills/data/web-application-security/performing-web-cache-poisoning-attack/SKILL.md
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- 1,329
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- cache-poisoning Declared skill tag
- web-security Declared skill tag
- cdn Declared skill tag
- burpsuite Declared skill tag
- owasp Declared skill tag
- writing Derived category
- security Derived category
- testing Derived category
- security-application Derived category
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# Performing Web Cache Poisoning Attack
## When to Use
- During authorized penetration tests when the application uses CDN or reverse proxy caching (Cloudflare, Akamai, Varnish, Nginx)
- When assessing web applications for cache-based vulnerabilities that could affect all users
- For testing whether unkeyed HTTP headers are reflected in cached responses
- When evaluating cache key behavior and cache deception vulnerabilities
- During security assessments of applications with aggressive caching policies
### How to CONFIRM a Hit (avoid false negatives)
- **Positive signal**: an **unkeyed input** (header or parameter) is reflected into a response that is then **CACHED and served to a different client** — confirm with a clean follow-up request (no injected input) that still returns your payload, plus `X-Cache: HIT` / `CF-Cache-Status: HIT` / a growing `Age`.
- Reflection alone is not poisoning. The payload must persist in the cache and reach a second visitor.