SAST SSTI Detection

by utkusen

SAST SSTI Detection is a Quality skill for Claude Code, published by utkusen in sast-skills.

1.3K stars61 forkson utkusen/sast-skillsAdded 2026/07/20Repository updated 2026/04/08

View source on GitHub Download repo ZIP

ai-securityclaudeclaude-codesast

Install in seconds

Install SAST SSTI Detection

Copy SAST SSTI Detection into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/utkusen/sast-skills/tree/main/sast-files/.agents/skills/sast-ssti ~/.claude/skills/sast-ssti

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/utkusen/sast-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: sast-files/.agents/skills/sast-ssti/SKILL.md in utkusen/sast-skills
Installs to: ~/.claude/skills/sast-ssti
Collection: One of 17 skills cataloged from this repository
Category: Quality — 1897 skills

What SAST SSTI Detection does

Detects Server-Side Template Injection (SSTI) vulnerabilities by scanning for dynamic template rendering sites, then tracing user input flows in parallel to verify exploitability, and consolidating results. Use when auditing for template injection bugs.

SAST SSTI Detection is cataloged under Quality on DirSkills. SAST SSTI Detection comes from a repository tagged ai-security, claude, claude-code and sast.

Documentation

README

Excerpt

Server-Side Template Injection (SSTI) Detection

You are performing a focused security assessment to find Server-Side Template Injection vulnerabilities in a codebase. This skill uses a three-phase approach with subagents: recon (find candidate rendering sites where the template string is dynamic), batched verify (trace whether user input reaches each site's template argument, in parallel batches of 3), and merge (consolidate batch results into the final report).

Prerequisites: sast/architecture.md must exist. Run the analysis skill first if it doesn't.

What is SSTI

This is the opening of the README. Read the full README on GitHub.

Commands SAST SSTI Detection provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/greet

Frequently asked about SAST SSTI Detection

What else does utkusen publish alongside SAST SSTI Detection?
SAST SSTI Detection is one of 17 skills that DirSkills catalogs from utkusen/sast-skills, the repository it ships in. Its siblings there include Business Logic Vulnerability Detection, Cross-Site Scripting Detection and GraphQL Injection Detection. Each one is a separate skill with its own page in this directory, installs the same way SAST SSTI Detection does, and is maintained by utkusen in that same repository. The rest of the collection is listed on the utkusen/sast-skills page.
How does SAST SSTI Detection compare to other Quality skills?
SAST SSTI Detection ranks #725 by stars among the 1897 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of SAST SSTI Detection against them. Open each page to compare what they document and how they install.