FreeNo loginRSS · MCP

A free CVE feed for agents

Merged from the CVE List, GitHub Advisory Database, OSV, NVD, ENISA EUVD, CISA KEV, EPSS and Exploit-DB. Summaries are written by a model and labeled as such.

checked 1m ago33 critical in the past week
01 VULNERABILITIES

Stay up to date.

The latest Critical and High vulnerabilities, newest first.

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Vulnerability set
Technology
02 CHECK YOUR STACK

Check the versions you actually run.

Upload a lockfile to find known vulnerabilities in your project's dependencies. Get a report you can share, with affected packages, severity scores, and links to the details.

Your report and RSS feed stay up to date as the catalog syncs.

Supported lockfiles

package-lock.json, bun.lock, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, Cargo.lock, go.sum, Gemfile.lock, mix.lock

03 CONNECT YOUR AGENT HERE

Give your agent the context.

Connect Claude Code, Cursor, Codex, or other agents to look up CVEs, check affected versions, and review newly disclosed vulnerabilities alongside your code.

Set up the cve.now MCP server for me. cve.now is a free, public vulnerability feed: no login, no API key.

- Server name: cve-now
- Transport: Streamable HTTP
- URL: https://mcp.cve.now/mcp

Add it the way you normally add MCP servers (your CLI command or your MCP config file), then confirm it connects and lists its tools: get_vulnerability, list_feed and check_stack. To finish, use get_vulnerability to look up one recent CVE and summarize it for me.

Paste this into any coding agent. It adds the server with its own MCP setup.

04 GET NOTIFICATIONS

Subscribe to RSS feed.

Pick the vulnerability set, technology, and ecosystem you care about, then copy a format into your feed reader or Slack's RSS app to receive updates where you work. The list above follows the same selection.

YOUR FEED

All

Subscriptions use up to 200 recent matching entries. The full catalog browser is uncapped.

Vulnerability set
Technology

In Slack, use /feed subscribe followed by the RSS URL.

FAQ

Questions people ask.

Anything missing? Read the reference or open an issue on GitHub.

What is cve.now?

A free, public vulnerability feed. It merges the CVE List, GitHub Advisory Database, OSV, NVD, ENISA EUVD, CISA KEV, EPSS and Exploit-DB into one entry per vulnerability, with a short plain-English summary. You can read it as RSS, Atom or JSON Feed, query it as a JSON API, or connect a coding agent to it over MCP.

Is it really free? What is the catch?

It is free, with no login and no API key. Sazabi already merges this data for its own product, so publishing it costs little. Summaries are licensed CC-BY 4.0.

Is there a cve.now token or coin?

No. cve.now has no token or coin. Sazabi did not create one, is not affiliated with any, and does not collect fees from any. Anything claiming otherwise is unrelated to this site.

Where does the data come from, and how fresh is it?

The CVE List, GitHub Advisory Database, OSV, NVD, ENISA EUVD, CISA KEV, FIRST EPSS and Exploit-DB. The CVE List, GitHub advisories, OSV and KEV are checked every few minutes; NVD and EUVD are read every ten minutes, and existing entries are re-checked for EPSS changes a few times a day. The time at the top of this page is the latest polling run, not a fresh read of every source. Historical CVEs come from a complete official CVE List snapshot, and new records and edits are layered on top of it.

What makes a vulnerability critical here?

A vulnerability is critical when it is listed in CISA KEV, when it scores CVSS 9 or higher and affects one of the listed technologies, or when it scores CVSS 7 or higher and its EPSS probability has reached 0.1. The critical feed is deliberately short.

Who writes the summaries? Can I trust them?

A model writes them, and each summary names the model that wrote it. Severity, exploitation status and affected versions come from the source data, not from the model, and the original description is always available on the entry page.

What happens to my lockfile?

It is uploaded to private storage and parsed there to build your report and your stack feed. Uploads are retained for analytics and feed generation. Anyone with your /stack?s= link can see the vulnerability matches; the file itself is never served.

Does a clean stack report mean I am safe?

No. A report covers known advisories that list affected versions in a supported package ecosystem. It does not cover vulnerabilities without version data, unsupported ecosystems, or anything not yet disclosed.

How do I look up one CVE?

Open cve.now/<id> with a CVE, GHSA or OSV id, for example cve.now/CVE-2026-96951. The same entry is available as JSON at /api/v1/entries/<id>.

Is there an API?

Yes. /api/v1/entries lists published entries newest first with cursor pagination, /api/v1/entries/<id> returns one entry, and /api/v1/status reports polling and historical coverage. Any feed URL also accepts format=json. The full reference is at /llms.txt.

How do I get alerts in Slack?

Install Slack's RSS app, then run /feed subscribe followed by any feed URL from the subscribe section in the channel where you want updates.

How do I connect my coding agent?

Add the MCP server at https://mcp.cve.now/mcp, or paste the setup prompt from the agent section into your agent. Its tools are get_vulnerability, list_feed and check_stack.

How is this different from OSV, NVD or other CVE feeds?

Each of those is one source. cve.now merges all of them into one entry per vulnerability, adds exploitation data from KEV, EPSS and Exploit-DB, keeps a short critical list, and offers feeds for your exact stack plus access for agents.

How do I report a wrong entry or request a technology?

Open an issue at github.com/sazabi/cve.now. There are templates for wrong entries, merge problems, technology requests and source suggestions.