HTML Injection Testing

95 / 100 · Low risk

Fine to try.

By Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI (GitHub) · coding · 512 stars · scanned at commit c4a059b

This skill should be used when the user asks to "test for HTML injection", "inject HTML into web pages", "perform HTML injection attacks", "deface web applications", or "test content injection vulnerabilities". It provides comprehensive HTML injection attack techniques and testing methodologies.

Works with any agent that supports SKILL.md skills.

What this skill can do

Sends data to these websites: target.com

The author does not mention this.

Found in 6 places.

.agent/skills/html-injection-testing/sub-skills/phase-3-basic-html-injection-testing.md, line 30curl "http://target.com/search?q=<h1>Test</h1>"
.agent/skills/html-injection-testing/sub-skills/phase-3-basic-html-injection-testing.md, line 33curl -s "http://target.com/search?q=<b>Bold</b>" | grep -i "bold"
.agent/skills/html-injection-testing/sub-skills/phase-3-basic-html-injection-testing.md, line 36curl "http://target.com/search?q=%3Ch1%3ETest%3C%2Fh1%3E"

Show 3 more

.agent/skills/html-injection-testing/sub-skills/phase-4-types-of-html-injection.md, line 42curl -X POST -d "comment=<div style='color:red'>Malicious Content</div>" \
.agent/skills/html-injection-testing/sub-skills/phase-4-types-of-html-injection.md, line 46curl -X POST -d "name=<script>alert(1)</script>&email=test@test.com" \
.agent/skills/html-injection-testing/sub-skills/phase-9-automated-testing.md, line 50response = requests.get(url, timeout=5)

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'html-injection-testing' ] || [ -L ~/.agents/skills/'html-injection-testing' ]; then echo 'A skill folder named html-injection-testing already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI' "$d" && git -C "$d" checkout --quiet 'c4a059bbf7a8d6b2162071f0fbfe74053faa6d20' -- '.agent/skills/html-injection-testing' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agent/skills/html-injection-testing' ~/.agents/skills/'html-injection-testing' && 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/'html-injection-testing' ~/.claude/skills/'html-injection-testing' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-08	`c4a059b`	100
2026-11-07	`c4a059b`	95

Also found in

Identical copies of this skill exist at:

Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-repair-test/.agent/skills/html-injection-testing
Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-test-project/.agent/skills/html-injection-testing