Menu

Individual skill

exploit-ssti

Server-Side Template Injection (SSTI) — RCE through template engines. Covers Jinja2 (Python/Flask), Twig (PHP/Symfony), Freemarker (Java), ERB (Ruby), Razor (.NET). Includes engine fingerprinting, MRO chain construction, and filter bypass.

packages/decepticon/decepticon/skills/standard/exploit/web/ssti/SKILL.md

Read pinned source

Source commit df879550544d36b6b1e69062f05adae28537adf2

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Network or broad shell
Last checked
Nov 8, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
6,563
Repository last updated
Nov 7, 2026
License
Apache-2.0

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt

# Server-Side Template Injection (SSTI)

Exploits template engines that render user input, achieving RCE by injecting template directives.

## Default Credentials Fast-Path (when `default_credentials` is a co-tag)

When `default_credentials` appears alongside `ssti` in the challenge tags, attempt login FIRST before any template injection probing:

```bash
# Try top default credential pairs in your FIRST exploit bash call
for creds in "admin:admin" "admin:password" "test:test" "admin:123456" "user:user" "admin:admin123"; do
  user="${creds%%:*}"; pass="${creds##*:}"
  resp=$(curl -s -c /tmp/cookies.txt -X POST "http://<TARGET>/login" \
[Credential-related source omitted]