Server-Side

Test for server-side vulnerabilities that allow unauthorized access, RCE, or data exfiltration.

Techniques

Type	Key Vectors
SSRF	Internal service access, cloud metadata, protocol smuggling
HTTP Smuggling	CL.TE, TE.CL, TE.TE, CL.0, H2.CL, h2c, multi-layer proxy chains, connection pooling desync
Path Traversal	Directory traversal, null bytes, encoding bypass
File Upload	Extension bypass, content-type manipulation, polyglot files
Deserialization	Java, PHP, Python, .NET gadget chains
Host Header	Password reset poisoning, cache poisoning, routing-based SSRF
CUPS / cups-browsed	CVE-2024-47076/47175/47176/47177 — UDP browse → IPP injection → PPD injection → foomatic-rip RCE (see `skills/infrastructure/reference/scenarios/network-recon/cups-browsed-rce.md`)