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Server-Side · transilienceai | DecimalAI

securityby transilienceai

Server-Side

transilienceai/server-side

Source transilienceai/communitytools ↗License MIT

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

SkillScore73Maintained

Automatic

Security & AppSec pack

Last verified 8/18/2026

What it changes

Passed 15 of 21 test cases with the skill, and 11 of 21 without it.

Without skill55%

With skill73%

Checks it passed that the model alone missed

Includes h2c upgrade desynchronization testing.
Specifies testing protocol smuggling techniques.
Distinguishes ipptool output from libcups runtime parser behavior.

and 2 more in the full report

5 fixed11 passed either way5 still failing1 broke

Pass-rate lift: +18 pp
Tokens: +11%
Agent turns: 0%
Response time: -9%

Model gemini-3.6-flashMeasured 8/18/2026v116 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/transilienceai-server-side/SKILL.md https://app.decimal.ai/s/transilienceai-server-side/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add transilienceai-server-side, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/transilienceai-server-side/ and pins it in .decimal/skills.lock

decimalai skills add transilienceai-server-side

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/transilienceai-server-side/SKILL.md https://app.decimal.ai/s/transilienceai-server-side/SKILL.md

Raw file: /s/transilienceai-server-side/SKILL.md ↗ · machine-readable summary at /s/transilienceai-server-side.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 4

Prompt

An architecture review team wants to test cleartext HTTP/2 protocol switches across reverse proxy setups. Which desync vector covers this scenario?

What was checked, without and with the skill
Checked	Without skill	With skill
Includes h2c upgrade desynchronization testing.	Missed	Passed

case-14 · gemini-3.6-flash · 8/18/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md33 linessingle file

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

Identify server-side processing points
Test for vulnerability class indicators
Bypass protections (WAF, allowlists, encoding filters)
Demonstrate impact (file read, RCE, internal access)
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

Track record

Benchmark

15 / 21

test cases passed, vs 11 / 21 without

Adoption

Users: 1
Times used: 12

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

transilienceai / communitytools

skills/server-side/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

transilienceai/client-sideClient-side vulnerability testing - XSS (reflected/stored/DOM), CSRF, CORS misconfiguration, Clickjacking, DOM-based attacks, and Prototype Pollution.Close match+14 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Server-Side

Techniques

Workflow

Reference

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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