redteam-cve-validation

redteam-cve-validation is a skill for Claude Code, Codex from fb0sh/pentester. It costs 42 tokens per session (501 once invoked), scanned A, a copy of redteam-cve-validation, MIT.

A guide for checking whether a reported CVE (a publicly documented software vulnerability) actually applies to a target. It compares the CVE with observed products, versions, services, configurations, and scope.

In plain words
What is it for?
Use it after finding candidate CVEs to decide whether each one is applicable, patched, out of scope, or needs more information.
Why use it?
It prevents a CVE name alone from being treated as proof that a system is vulnerable. It also avoids broad or destructive exploit attempts when the evidence is insufficient.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/fb0sh/pentester/redteam-cve-validation
Any agent
npx skills add fb0sh/pentester --skill redteam-cve-validation
Clone the repo
git clone --depth 1 https://github.com/fb0sh/pentester

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for redteam-cve-validation

README.md
[![agentmods](https://agentmods.dev/badge/skills/fb0sh/pentester/redteam-cve-validation.svg)](https://agentmods.dev/skills/fb0sh/pentester/redteam-cve-validation)
Your own site
<a href="https://agentmods.dev/skills/fb0sh/pentester/redteam-cve-validation"><img src="https://agentmods.dev/badge/skills/fb0sh/pentester/redteam-cve-validation.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 501 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00042 $0.00501
Opus 5 $0.00021 $0.00251
Sonnet 5 $0.00008 $0.00100
Haiku 4.5 $0.00004 $0.00050

Measured 5d ago against content hash f00a98838e9a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

redteam-cve-validation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to redteam-cve-validation — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/third-party/redteam-cve-validation/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CVE Validation

Domain

Validate candidate CVEs against the current target evidence without assuming exploitability. The module consumes cve_candidate_list, product/version evidence, service fingerprints, and scope data, then decides whether the CVE path is usable, patched, not applicable, or needs more recon.

Trigger

cve_candidate_list_ready

Feedback Gates

  • Scope Gate: target and asset must be in the declared authorization boundary.
  • Evidence Gate: candidate CVE must map to observed product, version, endpoint, service, or fingerprint evidence.
  • Applicability Gate: version range, configuration, and reachable component must plausibly match.
  • Patch Gate: observed version or vendor advisory must not prove the issue fixed.
  • Execution Gate: active validation requires a registered scoped adapter; missing adapters block rather than pretending execution happened.

Boundaries

  • Do not run destructive or broad exploit attempts.
  • Do not validate outside the declared target and scope.
  • Do not treat CVE names alone as proof.
  • Prefer passive or low-noise confirmation first.
  • If evidence is insufficient, return to recon or CVE lookup rather than guessing.

Pivot Hints

  • Candidate has no product/version match -> return to recon-intake for better fingerprinting.
  • Candidate is patched or not applicable -> route by highest-ranked attack surface from recon.
  • Tool or adapter missing -> record missing capability and request/choose an equivalent adapter.
  • Too many candidates -> rank by reachable component, confidence, impact, and version fit.

Exit Conditions

  • Confirmed applicable candidate -> continue to the specific validation/testing skill.
  • All candidates patched/not applicable -> exit to evidence-based router.
  • Evidence incomplete -> return to recon-intake or cve-lookup.
  • Required tool/scope/adapter missing -> block with the missing capability or scope evidence.

Exit Evidence

  • Required: cve_validation_result
  • Optional: cve_patch_status, applicability_proof, non_applicability_reason
  • min_attempts: 1

Read the full file on GitHub · 62 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 62 lines · 42 tokens per session scan A f00a98838e9a

Subscribe to this mod's changes

redteam-cve-validation is a skill published in the GitHub repository fb0sh/pentester (23 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 501 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to redteam-cve-validation, differing in 0 lines, and is treated as a copy.

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