{"uid":"cap_Bh5vjabdqSh3RdrefQj6-","slug":"fittings-epss-score-lookup-c3632f06","name":"fittings EPSS Score Lookup","description":"The FIRST.org EPSS probability and percentile for one or more CVEs: the modelled chance each is exploited in the next 30 days.","url":"https://fittings.sh/v1/epss/score?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["cve"],"properties":{"cve":{"type":"string","description":"One CVE id, or up to 50 comma-separated"}}}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.00398","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.00398/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.00398","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.00398","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4otrp_5Zb5yWyCJkOLyeC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.00398","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the FIRST.org EPSS probability and percentile for one or more CVEs, indicating the modeled likelihood of exploitation within the next 30 days.","exampleAgentPrompt":"What's the EPSS exploitation probability and percentile for CVE-2021-44228 and CVE-2023-44487 — I want to know how likely each is to be exploited in the next 30 days?","exampleUseCases":[{"title":"Vulnerability patch prioritization","prompt":"I have a list of open CVEs from our last scan — CVE-2024-21762, CVE-2023-44487, and CVE-2021-44228. Can you pull the EPSS scores for all three so I can prioritize which to patch first based on exploitation likelihood?"},{"title":"Security triage for a single critical CVE","prompt":"We just got alerted about CVE-2024-3400. What's the EPSS probability and percentile for it — how likely is it to be exploited in the next 30 days?"},{"title":"Automated threat intelligence enrichment","prompt":"I'm building a dashboard that tracks our exposed CVEs. For CVE-2022-26134 and CVE-2022-30190, can you fetch the current FIRST.org EPSS scores so I can show exploitation risk alongside severity ratings?"}],"resultDescription":"Returns, for each queried CVE, its EPSS probability (a float between 0 and 1 representing the modeled chance of exploitation in the next 30 days) and its percentile rank relative to all scored CVEs, as sourced from the FIRST.org EPSS model.","failureModes":["Invalid or non-existent CVE ID returns an error or empty result","More than 50 CVEs submitted in a single request may be rejected","Malformed CVE format (e.g. missing 'CVE-' prefix) may yield no results","Network or upstream FIRST.org data unavailability could cause timeouts","Very new CVEs may not yet have an EPSS score assigned"],"whenToPreferThis":"Use this endpoint when you need fast, authoritative EPSS exploitation probability scores from FIRST.org for one or more CVEs — especially when prioritizing patch management or vulnerability triage by exploitation likelihood rather than CVSS severity alone. Prefer this over manual FIRST.org lookups or CVSS-only scoring when you want a data-driven, quantitative exploitation risk signal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T06:46:54.995Z","isFirstParty":false,"canonicalSlug":"fittings-epss-score-lookup-c3632f06"}