# Server Side

> Server-side vulnerability testing - SSRF, HTTP Request Smuggling, Path Traversal, File Upload, Insecure Deserialization, and Host Header injection.

- **Type:** Skill
- **Install:** `agentstack add skill-transilienceai-communitytools-server-side`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [transilienceai](https://agentstack.voostack.com/s/transilienceai)
- **Installs:** 0
- **Category:** [Security](https://agentstack.voostack.com/c/security)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [transilienceai](https://github.com/transilienceai)
- **Source:** https://github.com/transilienceai/communitytools/tree/main/skills/server-side
- **Website:** https://www.transilience.ai/

## Install

```sh
agentstack add skill-transilienceai-communitytools-server-side
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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`) |

## Workflow

1. Identify server-side processing points
2. Test for vulnerability class indicators
3. Bypass protections (WAF, allowlists, encoding filters)
4. Demonstrate impact (file read, RCE, internal access)
5. Capture evidence with PoC

## Reference

- `reference/scenarios/ssrf/*.md` - SSRF techniques and labs
- `reference/http-request-smuggling*.md` - Smuggling techniques
- `reference/scenarios/path-traversal/*.md` - Path traversal bypass methods
- `reference/file-upload*.md` - File upload exploitation
- `reference/insecure-deserialization*.md` - Deserialization attacks
- `reference/http-host-header*.md` - Host header injection
- `skills/infrastructure/reference/scenarios/network-recon/cups-browsed-rce.md` - CUPS RCE chain (CVE-2024-47076/175/176/177); ipptool false positives vs libcups runtime parser; ippserver Python lib version-1.1 hardcode bug

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [transilienceai](https://github.com/transilienceai)
- **Source:** [transilienceai/communitytools](https://github.com/transilienceai/communitytools)
- **License:** MIT
- **Homepage:** https://www.transilience.ai/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-transilienceai-communitytools-server-side
- Seller: https://agentstack.voostack.com/s/transilienceai
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.