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Vulnerability Validation · codexstar69 | DecimalAI

securityby codexstar69

Vulnerability Validation

codexstar69/vulnerability-validation

Source codexstar69/bug-hunter ↗License MIT

Validate security findings for exploitability, reachability, and real-world impact using Bug Hunter-native findings artifacts. Use after security scans, before patch generation, or whenever the user wants confirmation that a suspected vulnerability is actually exploitable.

SkillScore73Maintained

Automatic

Security & AppSec pack

Last verified 8/19/2026

What it changes

Passed 16 of 22 test cases with the skill, and 14 of 22 without it.

Without skill64%

With skill73%

Checks it passed that the model alone missed

Categorize the exploitability level as HARD.
Provide a benign proof-of-concept demonstration.
Store output files under the .bug-hunter/ directory structure.

3 fixed13 passed either way5 still failing1 broke

Pass-rate lift: +9 pp
Tokens: +0%
Agent turns: 0%
Response time: +11%

Model gemini-3.6-flashMeasured 8/19/2026v216 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/codexstar69-vulnerability-validation/SKILL.md https://app.decimal.ai/s/codexstar69-vulnerability-validation/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add codexstar69-vulnerability-validation, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/codexstar69-vulnerability-validation/ and pins it in .decimal/skills.lock

decimalai skills add codexstar69-vulnerability-validation

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/codexstar69-vulnerability-validation/SKILL.md https://app.decimal.ai/s/codexstar69-vulnerability-validation/SKILL.md

Raw file: /s/codexstar69-vulnerability-validation/SKILL.md ↗ · machine-readable summary at /s/codexstar69-vulnerability-validation.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 3

Prompt

Where should custom assessment artifacts produced during the vulnerability evaluation run be placed relative to the workspace root?

What was checked, without and with the skill
Checked	Without skill	With skill
Store output files under the .bug-hunter/ directory structure.	Missed	Passed

case-19 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md54 linessingle file

Vulnerability Validation

This is a bundled local Bug Hunter companion skill. It strengthens the security-specific parts of the Skeptic/Referee process.

Purpose

Take suspected or confirmed security findings and answer:

Is the vulnerable path reachable?
Can an attacker control the input?
Are there existing mitigations?
How exploitable is it really?
What is the CVSS / PoC / impact level?

Inputs

Prefer Bug Hunter-native artifacts:

.bug-hunter/hunter-findings.json
.bug-hunter/threat-model.md
.bug-hunter/security-config.json
.bug-hunter/dep-findings.json when dependency issues are involved

Workflow

Read the findings and isolate the security ones.
Trace reachability:
- EXTERNAL
- AUTHENTICATED
- INTERNAL
- UNREACHABLE
Trace exploitability:
- EASY
- MEDIUM
- HARD
- NOT_EXPLOITABLE
Check for mitigations already present in code, framework behavior, or deployment assumptions.
For confirmed HIGH/CRITICAL security bugs, generate:
- exploitation path
- benign proof of concept
- CVSS vector + score
Feed the result back into Bug Hunter-native verdicting.

Track record

Benchmark

16 / 22

test cases passed, vs 14 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

codexstar69 / bug-hunter

skills/vulnerability-validation/SKILL.md

View on GitHub ↗

License MITImported 8/10/2026Version v2

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

cowork-os/validationUse when Codex is already in the validation phase of a security scan or the user explicitly asks to determine whether one or more candidate security findings are valid. Do not use as the primary trigger for full PR, commit, branch, patch, or repository scans.Close match+36 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Vulnerability Validation

Purpose

Inputs

Workflow

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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