fetch-new-cves

fetch-new-cves is a skill for Claude Code from mappedsky/seizu. It costs 51 tokens per session (329 once invoked), scanned A, original, Apache-2.0.

A tool that finds CVEs published within a recent time window from a graph populated by the NVD, the U.S. National Vulnerability Database. It returns a deduplicated list of CVE identifiers ordered from newest to oldest.

In plain words
What is it for?
Use it to collect newly published CVEs for a scheduled or follow-up security assessment.
Why use it?
It provides a clean input list for later repository vulnerability assessment instead of making downstream work search and remove duplicates.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to collect newly published CVEs for a scheduled or follow-up security assessment.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mappedsky/seizu/fetch-new-cves
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.

Any agent
npx skills add mappedsky/seizu --skill fetch-new-cves
Clone the repo
git clone --depth 1 https://github.com/mappedsky/seizu

Made for: Claude Code.

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 fetch-new-cves

README.md
[![agentmods](https://agentmods.dev/badge/skills/mappedsky/seizu/fetch-new-cves/github.svg)](https://agentmods.dev/skills/mappedsky/seizu/fetch-new-cves)
Your own site
<a href="https://agentmods.dev/skills/mappedsky/seizu/fetch-new-cves"><img src="https://agentmods.dev/badge/skills/mappedsky/seizu/fetch-new-cves/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fetch-new-cves

Your own site · 80×15
<a href="https://agentmods.dev/skills/mappedsky/seizu/fetch-new-cves"><img src="https://agentmods.dev/badge/skills/mappedsky/seizu/fetch-new-cves.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 329 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 5.1 $0.00051 $0.00329
Opus 5.5 $0.00020 $0.00132
Sonnet 5.5 $0.00010 $0.00066
Haiku 4.5 $0.00005 $0.00033

Measured 1mo ago against content hash 9450dee69ac8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fetch-new-cves 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 1mo 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.

.config/dev/seizu/plugins/cve-response/skills/fetch-new-cves/SKILL.md · 23 lines

What it actually says

Query the graph for CVEs published within the lookback window and return a clean list of CVE IDs ready for consumption by cve_repo_assessment.

Inputs — the values arrive in the ## Inputs block below these instructions:

  • lookback_hours — how far back to search, in hours. Defaults to 24.

Workflow:

  1. Call cve_analysis__get_recent_cves with hours= the lookback_hours input and severity="" (no filter) to retrieve all CVEs published within the window, ordered by published date descending.
  2. Extract the id field from each result row.
  3. Deduplicate the CVE IDs.

Output format:

  • Return a JSON array of CVE ID strings, sorted by most recent published date first. Example: ["CVE-2026-12345", "CVE-2026-12344", "CVE-2026-12343"]
  • Include a brief summary: total CVEs found, lookback window used, and the newest and oldest publication dates in the set.
  • If no CVEs are found, output an empty array and note that no CVEs were published in the graph within the window.
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. 1mo ago First seen · 23 lines · 51 tokens per session scan A 9450dee69ac8

Subscribe to this mod's changes

fetch-new-cves is a skill published in the GitHub repository mappedsky/seizu (5 stars, last pushed 16d ago), licensed Apache-2.0. It adds 51 tokens to every session and 329 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-11.

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