2s CVE Vulnerability Lookup

x402

2s CVE Vulnerability Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0018/call, status unknown (last checked 2026-10-13).

Looks up detailed vulnerability data for a given CVE ID, including CVSS scores, CWEs, EPSS exploit probability, and CISA KEV known-exploited status.

Price / call$0.0018

Seller volume →—

Success—

StatusUnknown

How this service works

Look up a CVE by id (e.g. CVE-2021-44228) across three authoritative vulnerability feeds in one call. Query: cve (CVE-YYYY-NNNN). Returns the canonical record — description, CVSS base score + severity + vector, CWE weakness ids, published/modified dates, reference links — plus whether it is on the US CISA Known Exploited Vulnerabilities catalog (with remediation due date and known-ransomware flag) and its EPSS exploit-probability score and percentile. The exploited and EPSS sections report independently, so one feed being unavailable does not fail the call. 404 if the CVE id is unknown. For triage, prioritization, and anti-hallucination on vulnerability claims.

Output

Returns a JSON object with the CVE ID, CVSS version/base score/severity/vector string, list of associated CWEs, EPSS exploit probability score and percentile with date, data sources (e.g. NVD), a human-readable description of the vulnerability, and a knownExploited block indicating CISA KEV listing status, date added, patch due date, and ransomware campaign use flag.

Example use cases

Example prompt

“Can you pull up the full vulnerability details for CVE-2021-44228 — I need the CVSS score, severity, EPSS exploit probability, any associated CWEs, and whether it's listed as a known-exploited vulnerability in the CISA catalog?”

Technical details

Endpoint

GEThttps://2s.io/api/security/cve?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent needs authoritative, structured vulnerability intelligence for a specific CVE — especially when CVSS scoring, EPSS exploit likelihood, CWE classification, and CISA KEV status are all needed in a single call with no API key or signup required. Prefer this over manual NVD lookups or scraping when programmatic, pay-per-call access is desired.

Side effects

CVE ID not found — returns empty or null result if the CVE does not exist in the database
Malformed CVE ID (e.g. missing 'CVE-' prefix or invalid format) — likely returns an error or empty response
EPSS data not yet available for very recent CVEs — score fields may be null
NVD data lag for newly published CVEs — some fields may be incomplete shortly after disclosure
Payment failure via x402 — call not executed if USDC payment is not confirmed

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {
      "cve": "CVE-2021-44228"
    }
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object

Output

{
  "data": {
    "cve": "CVE-2021-44228",
    "cvss": {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "version": "3.1",
      "baseScore": 10,
      "impactScore": 6,
      "baseSeverity": "CRITICAL",
      "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "exploitabilityScore": 3.9
    },
    "cwes": [
      "CWE-20",
      "CWE-400",
      "CWE-502",
      "CWE-917"
    ],
    "epss": {
      "date": "2026-06-18",
      "score": 0.99999,
      "percentile": 1
    },
    "sources": [
      {
        "url": "https://nvd.nist.gov/",
        "license": "Public domain (US government work)",
        "provider": "NIST National Vulnerability Database (NVD)"
      },
      {
        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
        "license": "Public domain (US government work)",
        "provider": "CISA Known Exploited Vulnerabilities Catalog"
      },
      {
        "url": "https://www.first.org/epss/",
        "license": "CC BY 4.0 (FIRST.org)",
        "provider": "FIRST.org EPSS (Exploit Prediction Scoring System)"
      }
    ],
    "epssError": null,
    "published": "2021-12-10T10:15:09.143",
    "references": [
      {
        "url": "http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Disclosure.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Execution.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Bypassing.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html",
        "tags": [
          "Broken Link",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticated-Log4Shell-JNDI-Injection-Remote-Code-Execution.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenticated-Log4Shell-Remote-Code-Execution.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html",
        "tags": [
          "Third Party Advisory",
          "VDB Entry"
        ]
      },
      {
        "url": "http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-Execution.html",
        "tags": [
          "Exploit",
          "Third Party Advisory",
          "VDB Entry"
        ]
      }
    ],
    "vulnStatus": "Analyzed",
    "description": "Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.",
    "lastModified": "2026-06-17T04:12:05.460",
    "knownExploited": {
      "listed": true,
      "dueDate": "2021-12-24",
      "product": "Log4j2",
      "dateAdded": "2021-12-10",
      "vendorProject": "Apache",
      "requiredAction": "For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.",
      "vulnerabilityName": "Apache Log4j2 Remote Code Execution Vulnerability",
      "knownRansomwareCampaignUse": "Known"
    },
    "knownExploitedError": null
  },
  "meta": {
    "cost": {
      "usd": 0.0018,
      "tier": 0
    },
    "caller": "x402",
    "version": null,
    "endpoint": "security.cve",
    "settlement": {
      "txHash": "0xb087d80194b8e1eca4e21c17ddd1087687696dacc29db750f7a342310440542e",
      "network": "eip155:8453",
      "success": true
    }
  }
}

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