# EPSS Vulnerability Prioritization Monitor (`orbiscribe/epss-vulnerability-prioritization-monitor`) Actor

Score CVE watchlists with FIRST EPSS exploit probability, detect rising risk, and optionally enrich matches with NVD details.

- **URL**: https://apify.com/orbiscribe/epss-vulnerability-prioritization-monitor.md
- **Developed by:** [Orbiscribe Labs](https://apify.com/orbiscribe) (community)
- **Categories:** Developer tools, Automation, Business
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$3.00 / 1,000 epss vulnerability matches

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## EPSS Vulnerability Prioritization Monitor

Turn a CVE list into a remediation queue using FIRST EPSS exploit probability.

This Actor is for security teams, MSPs, vulnerability-management consultants,
and platform teams that already have too many CVEs and need a simple feed of
what is more likely to be exploited. It accepts CVE IDs from scanners, SBOMs,
advisories, or tickets, pulls current EPSS probability and percentile scores,
optionally enriches records with NVD details, and marks scores that are new,
rising, falling, or unchanged across scheduled runs.

### What It Does

- Scores supplied CVE IDs with the public FIRST EPSS API
- Also emits CVEs above configurable EPSS and percentile thresholds
- Flags `new_score`, `score_increase`, `score_decrease`, and `unchanged`
- Adds NVD enrichment: CVSS, severity, description, CWE, CPE, and references
- Produces dataset rows, a buyer brief, threshold-only export, and Slack-ready
  alert records
- Works as a scheduled Apify monitor with webhooks to Slack, email, Sheets, or
  ticketing workflows

### Inputs

```json
{
  "cveIds": ["CVE-2024-3094", "CVE-2023-34362", "CVE-2021-44228"],
  "minEpss": 0.7,
  "minPercentile": 0.97,
  "maxResults": 100,
  "includeBelowThresholdWatchlist": true,
  "enrichWithNvd": false,
  "compareToPreviousRun": true,
  "dryRun": false
}
```

Leave `dryRun` enabled to preview deterministic demo output without API calls or
custom event charges.

### Outputs

Each dataset row includes:

- CVE ID
- EPSS probability and percentile
- priority bucket
- score change type and deltas
- optional NVD severity, CVSS score, description, CWE, CPE, and references
- source API URL and compliance notes

Example:

```json
{
  "recordType": "epss_vulnerability_priority_match",
  "cveId": "CVE-2024-3094",
  "changeType": "new_score",
  "priority": "critical",
  "epss": 0.84805,
  "percentile": 0.99352,
  "thresholdMatched": true,
  "nvdSeverity": "CRITICAL",
  "cvssScore": 10,
  "sourceUrl": "https://www.first.org/epss/data_stats#CVE-2024-3094"
}
```

### Why Use This Instead Of A Generic CVE Scraper

Most CVE feeds tell you severity. That is not the same as exploit likelihood.
EPSS adds a daily probability estimate that helps teams decide which
vulnerabilities deserve attention first. This Actor is built around that
workflow: score, threshold, compare to the last run, and emit structured events.

### Pricing

Recommended Apify pricing is pay per event:

- `epss-vulnerability-match`: `$0.003` per emitted vulnerability record
- Dry runs are free
- Free-plan users get the first 25 live records without this Actor's custom
  event charge

### Compliance Notes

This Actor uses public FIRST EPSS and, when enabled, NVD APIs. NVD enrichment is
off by default so broad threshold runs finish quickly. Without an NVD key, only
the first 10 emitted records are enriched to respect public rate limits. EPSS is
a prioritization signal, not a final remediation decision. Verify results
against your asset inventory, vendor advisories, exposure, compensating controls,
and internal policy.

# Actor input Schema

## `cveIds` (type: `array`):

Optional CVE watchlist to score, such as scanner output, SBOM findings, or advisory CVEs.

## `minEpss` (type: `number`):

Also emit vulnerabilities whose EPSS exploit probability is at or above this value.

## `minPercentile` (type: `number`):

Also emit vulnerabilities whose EPSS percentile is at or above this value.

## `maxResults` (type: `integer`):

Maximum high-EPSS threshold rows to fetch from FIRST.

## `includeBelowThresholdWatchlist` (type: `boolean`):

Emit supplied CVE IDs even when they do not meet the EPSS and percentile thresholds.

## `includeUnchanged` (type: `boolean`):

Emit unchanged CVE score rows. Usually leave this off for scheduled alerting workflows.

## `enrichWithNvd` (type: `boolean`):

Fetch CVSS, description, CWE, CPE, and references from the public NVD API. Leave off for fast threshold scans unless you provide an NVD API key or a small CVE list.

## `nvdApiKey` (type: `string`):

Optional NVD API key for faster enrichment. Leave blank for no-key public API use.

## `compareToPreviousRun` (type: `boolean`):

Store EPSS scores and mark new, rising, falling, or unchanged CVEs on later scheduled runs.

## `snapshotStoreName` (type: `string`):

Key-value store name for previous EPSS scores.

## `dryRun` (type: `boolean`):

Emit deterministic demo records without calling FIRST or charging custom pay-per-event events.

## Actor input object example

```json
{
  "cveIds": [
    "CVE-2024-3094",
    "CVE-2023-34362",
    "CVE-2021-44228"
  ],
  "minEpss": 0.7,
  "minPercentile": 0.97,
  "maxResults": 100,
  "includeBelowThresholdWatchlist": true,
  "includeUnchanged": false,
  "enrichWithNvd": false,
  "compareToPreviousRun": true,
  "snapshotStoreName": "epss-vulnerability-prioritization-monitor-snapshots",
  "dryRun": true
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `epssExport` (type: `string`):

No description

## `thresholdMatches` (type: `string`):

No description

## `buyerBrief` (type: `string`):

No description

## `runSummary` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("orbiscribe/epss-vulnerability-prioritization-monitor").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("orbiscribe/epss-vulnerability-prioritization-monitor").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call orbiscribe/epss-vulnerability-prioritization-monitor --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,orbiscribe/epss-vulnerability-prioritization-monitor"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/o07iHsJ0ArNAR7fmb/builds/FBYByBaWQ7FYRnNQK/openapi.json