Search and audit NIST NVD CVEs by keyword, severity, CWE, CISA KEV status, and CPE.
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Find all CVEs affecting a specific product and version using CPE (Common Platform Enumeration). Requires either an exact CPE name (cpeName) or a partial match string (virtualMatchString) with optional version range bounds. With cpeName, NVD scopes results to configurations where the product is directly vulnerable, not merely referenced as a dependency. Use nvd_search_cpes first to resolve the correct CPE string for a product. Returns full CVE records.
Maximum number of CVEs to return (default 20, max 2000).
Zero-based page offset for pagination. Page through totalCount with a modest limit rather than raising limit — this tool returns full CVE records, so a large limit is a large response.
Full CPEv2.3 name (e.g., "cpe:2.3:a:apache:http_server:2.4.51:*:*:*:*:*:*:*"). NVD adds isVulnerable automatically. Mutually exclusive with virtualMatchString.
Upper version bound. Requires virtualMatchString.
Filter out CVEs below this severity level. Applied after NVD returns the page, so it can only drop CVEs within limit — raise limit to widen what it sees.
When true, keeps every localized description NVD supplies on each record. Default keeps English only.
Lower version bound. Requires virtualMatchString.
Whether the upper version bound is inclusive or exclusive.
Whether the lower version bound is inclusive or exclusive.
Partial CPE match pattern (e.g., "cpe:2.3:a:apache:http_server:*"). Use with versionStart/versionEnd for version range audits. Mutually exclusive with cpeName.
Find all CVEs affecting a specific product and version using CPE (Common Platform Enumeration). Requires either an exact CPE name (cpeName) or a partial match string (virtualMatchString) with optional version range bounds. With cpeName, NVD scopes results to configurations where the product is directly vulnerable, not merely referenced as a dependency. Use nvd_search_cpes first to resolve the correct CPE string for a product. Returns full CVE records.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Maximum number of CVEs to return (default 20, max 2000). |
| offset | integer | Zero-based page offset for pagination. Page through totalCount with a modest limit rather than raising limit — this tool returns full CVE records, so a large limit is a large response. |
| cpeName | string | Full CPEv2.3 name (e.g., "cpe:2.3:a:apache:http_server:2.4.51:*:*:*:*:*:*:*"). NVD adds isVulnerable automatically. Mutually exclusive with virtualMatchString. |
| versionEnd | string | Upper version bound. Requires virtualMatchString. |
| severityMin | string | Filter out CVEs below this severity level. Applied after NVD returns the page, so it can only drop CVEs within limit — raise limit to widen what it sees. |
| allLanguages | boolean | When true, keeps every localized description NVD supplies on each record. Default keeps English only. |
| versionStart | string | Lower version bound. Requires virtualMatchString. |
| versionEndType | string | Whether the upper version bound is inclusive or exclusive. |
| versionStartType | string | Whether the lower version bound is inclusive or exclusive. |
| virtualMatchString | string | Partial CPE match pattern (e.g., "cpe:2.3:a:apache:http_server:*"). Use with versionStart/versionEnd for version range audits. Mutually exclusive with cpeName. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"limit": {
"type": "integer",
"default": 20,
"maximum": 2000,
"minimum": 1,
"description": "Maximum number of CVEs to return (default 20, max 2000)."
},
"offset": {
"type": "integer",
"default": 0,
"maximum": 9007199254740991,
"minimum": 0,
"description": "Zero-based page offset for pagination. Page through totalCount with a modest limit rather than raising limit — this tool returns full CVE records, so a large limit is a large response."
},
"cpeName": {
"type": "string",
"description": "Full CPEv2.3 name (e.g., \"cpe:2.3:a:apache:http_server:2.4.51:*:*:*:*:*:*:*\"). NVD adds isVulnerable automatically. Mutually exclusive with virtualMatchString."
},
"versionEnd": {
"type": "string",
"description": "Upper version bound. Requires virtualMatchString."
},
"severityMin": {
"enum": [
"LOW",
"MEDIUM",
"HIGH",
"CRITICAL"
],
"type": "string",
"description": "Filter out CVEs below this severity level. Applied after NVD returns the page, so it can only drop CVEs within limit — raise limit to widen what it sees."
},
"allLanguages": {
"type": "boolean",
"default": false,
"description": "When true, keeps every localized description NVD supplies on each record. Default keeps English only."
},
"versionStart": {
"type": "string",
"description": "Lower version bound. Requires virtualMatchString."
},
"versionEndType": {
"enum": [
"including",
"excluding"
],
"type": "string",
"default": "including",
"description": "Whether the upper version bound is inclusive or exclusive."
},
"versionStartType": {
"enum": [
"including",
"excluding"
],
"type": "string",
"default": "including",
"description": "Whether the lower version bound is inclusive or exclusive."
},
"virtualMatchString": {
"type": "string",
"description": "Partial CPE match pattern (e.g., \"cpe:2.3:a:apache:http_server:*\"). Use with versionStart/versionEnd for version range audits. Mutually exclusive with cpeName."
}
},
"additionalProperties": false
}Fetch one or more CVEs by ID from the NIST National Vulnerability Database. Returns CVSS scores across all available versions (v2.0, v3.0, v3.1, v4.0), CWE weakness classifications, affected CPE configurations, CISA KEV fields, and references. Up to 100 CVE IDs per call. For bulk lookups of more than 10 IDs, use brief: true — full records for 100 CVEs can exceed 1MB and exhaust context budgets.
| Argument | Type | Description |
|---|---|---|
| brief | boolean | When true, returns trimmed records (ID, status, top CVSS score, KEV name, published date, and a truncated description) instead of full detail. Recommended for batches of more than 10 IDs. |
| cveIds* | any | One CVE ID or an array of up to 100 CVE IDs to fetch. |
| allLanguages | boolean | When true, keeps every localized description NVD supplies on each record, and full records render all of them. Default keeps English only, falling back to whatever exists if a record has no English entry. Brief records always carry a single truncated description. |
| includeReferences | boolean | When false, omits the references array to reduce response size. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"cveIds"
],
"properties": {
"brief": {
"type": "boolean",
"default": false,
"description": "When true, returns trimmed records (ID, status, top CVSS score, KEV name, published date, and a truncated description) instead of full detail. Recommended for batches of more than 10 IDs."
},
"cveIds": {
"anyOf": [
{
"type": "string",
"description": "A single CVE ID (e.g., \"CVE-2021-44228\")."
},
{
"type": "array",
"items": {
"type": "string"
},
"maxItems": 100,
"minItems": 1,
"description": "An array of CVE IDs — at least 1, up to 100 per call."
}
],
"description": "One CVE ID or an array of up to 100 CVE IDs to fetch."
},
"allLanguages": {
"type": "boolean",
"default": false,
"description": "When true, keeps every localized description NVD supplies on each record, and full records render all of them. Default keeps English only, falling back to whatever exists if a record has no English entry. Brief records always carry a single truncated description."
},
"includeReferences": {
"type": "boolean",
"default": true,
"description": "When false, omits the references array to reduce response size."
}
},
"additionalProperties": false
}Retrieve the change history for a single CVE — CVSS score revisions, reference additions, status transitions (e.g., "Received" → "Analyzed"), and CPE configuration updates. Use when tracking a CVE's escalation or investigating when a score changed. Events are returned newest-first by default; pass order="oldest" for the CVE's earliest events. For the current record, call nvd_get_cve instead. The NVD history endpoint is significantly slower than other NVD endpoints, especially without an API key — set NVD_API_KEY for reliable operation.
| Argument | Type | Description |
|---|---|---|
| cveId* | string | CVE identifier to retrieve history for (e.g., "CVE-2021-44228"). |
| limit | integer | Maximum number of change events to return (default 20, max 2000). |
| order | string | Which end of the history to page from. Default "newest" returns the most recent events first, which is what escalation and re-score questions need. "oldest" returns NVD's native order (the CVE's first events first) and costs one upstream request, or two when the offset overruns the history; "newest" costs up to two on any history longer than limit. |
| offset | integer | Zero-based offset for paginating through change events, counted from whichever end order anchors to: offset 0 is the newest event under the default order="newest", and the oldest event under order="oldest". |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"cveId"
],
"properties": {
"cveId": {
"type": "string",
"description": "CVE identifier to retrieve history for (e.g., \"CVE-2021-44228\")."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 2000,
"minimum": 1,
"description": "Maximum number of change events to return (default 20, max 2000)."
},
"order": {
"enum": [
"oldest",
"newest"
],
"type": "string",
"default": "newest",
"description": "Which end of the history to page from. Default \"newest\" returns the most recent events first, which is what escalation and re-score questions need. \"oldest\" returns NVD's native order (the CVE's first events first) and costs one upstream request, or two when the offset overruns the history; \"newest\" costs up to two on any history longer than limit."
},
"offset": {
"type": "integer",
"default": 0,
"maximum": 9007199254740991,
"minimum": 0,
"description": "Zero-based offset for paginating through change events, counted from whichever end order anchors to: offset 0 is the newest event under the default order=\"newest\", and the oldest event under order=\"oldest\"."
}
},
"additionalProperties": false
}Search the NVD CPE (Common Platform Enumeration) dictionary by product keyword or partial match string. Returns CPE names, human-readable titles, and deprecation status. Use before nvd_audit_cpe to resolve the correct CPE name for a product — CPE strings are precise identifiers (e.g., cpe:2.3:a:apache:http_server:2.4.51:*:*:*:*:*:*:*) and must match exactly to audit the right product.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Maximum number of CPE entries to return (default 20, max 10000). |
| offset | integer | Zero-based page offset for pagination. When totalCount exceeds offset + returned, raise offset to reach the rest — a vendor-level keyword has nothing left to narrow toward. |
| keyword | string | Product name or vendor keyword (e.g., "apache http server", "openssl", "nginx"). At least one of keyword or cpeMatchString is required. |
| cpeMatchString | string | Partial CPEv2.3 pattern (e.g., "cpe:2.3:a:apache:http_server"). At least one of keyword or cpeMatchString is required. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"limit": {
"type": "integer",
"default": 20,
"maximum": 10000,
"minimum": 1,
"description": "Maximum number of CPE entries to return (default 20, max 10000)."
},
"offset": {
"type": "integer",
"default": 0,
"maximum": 9007199254740991,
"minimum": 0,
"description": "Zero-based page offset for pagination. When totalCount exceeds offset + returned, raise offset to reach the rest — a vendor-level keyword has nothing left to narrow toward."
},
"keyword": {
"type": "string",
"description": "Product name or vendor keyword (e.g., \"apache http server\", \"openssl\", \"nginx\"). At least one of keyword or cpeMatchString is required."
},
"cpeMatchString": {
"type": "string",
"description": "Partial CPEv2.3 pattern (e.g., \"cpe:2.3:a:apache:http_server\"). At least one of keyword or cpeMatchString is required."
}
},
"additionalProperties": false
}Search CVEs by keyword, severity, CWE, date range, or CISA KEV status. The primary discovery tool for vulnerability surveillance and triage workflows. pubDays and lastModDays are convenience shorthands that expand to date pairs; values over 120 days are clamped to the NVD maximum and reported in the response enrichment. Returns brief summaries — call nvd_get_cve for full detail on specific IDs. At least one filter is recommended; omitting all filters returns CVEs in default NVD index order (oldest first by CVE ID).
| Argument | Type | Description |
|---|---|---|
| cweId | string | Filter by CWE weakness ID (e.g., "CWE-79", "NVD-CWE-Other"). |
| limit | integer | Maximum number of results to return (default 20, max 2000). |
| offset | integer | Zero-based page offset for pagination. |
| kevOnly | boolean | When true, filters results to CVEs in the CISA Known Exploited Vulnerabilities catalog. |
| keyword | string | Full-text search across CVE descriptions (AND-semantics across words). |
| pubDays | integer | CVEs published in the last N days (max 120; values over 120 are clamped). Mutually exclusive with pubStartDate/pubEndDate. |
| severity | string |
| Filter to CVEs in exactly this CVSS severity band — NVD matches the one band, not a floor. Covering several bands (e.g. HIGH and CRITICAL) takes one call per band. |
| noRejected | boolean | When true (default), excludes CVEs with REJECT/Rejected status. |
| pubEndDate | string | ISO 8601 datetime for publication range end. Both pubStartDate and pubEndDate required together. |
| exactPhrase | boolean | When true, keyword matches as an exact phrase rather than ANDing its words independently. Requires keyword. |
| lastModDays | integer | CVEs last modified in the last N days (max 120; values over 120 are clamped). Mutually exclusive with lastModStartDate/lastModEndDate. |
| pubStartDate | string | ISO 8601 datetime for publication range start. Both pubStartDate and pubEndDate required together. Mutually exclusive with pubDays. |
| lastModEndDate | string | ISO 8601 datetime for last-modified range end. Both required together. |
| severityVersion | string | CVSS version to use for the severity filter. Default: v3 (maps to cvssV3Severity). |
| lastModStartDate | string | ISO 8601 datetime for last-modified range start. Both required together. Mutually exclusive with lastModDays. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"cweId": {
"type": "string",
"description": "Filter by CWE weakness ID (e.g., \"CWE-79\", \"NVD-CWE-Other\")."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 2000,
"minimum": 1,
"description": "Maximum number of results to return (default 20, max 2000)."
},
"offset": {
"type": "integer",
"default": 0,
"maximum": 9007199254740991,
"minimum": 0,
"description": "Zero-based page offset for pagination."
},
"kevOnly": {
"type": "boolean",
"default": false,
"description": "When true, filters results to CVEs in the CISA Known Exploited Vulnerabilities catalog."
},
"keyword": {
"type": "string",
"description": "Full-text search across CVE descriptions (AND-semantics across words)."
},
"pubDays": {
"type": "integer",
"maximum": 9007199254740991,
"description": "CVEs published in the last N days (max 120; values over 120 are clamped). Mutually exclusive with pubStartDate/pubEndDate.",
"exclusiveMinimum": 0
},
"severity": {
"enum": [
"LOW",
"MEDIUM",
"HIGH",
"CRITICAL"
],
"type": "string",
"description": "Filter to CVEs in exactly this CVSS severity band — NVD matches the one band, not a floor. Covering several bands (e.g. HIGH and CRITICAL) takes one call per band."
},
"noRejected": {
"type": "boolean",
"default": true,
"description": "When true (default), excludes CVEs with REJECT/Rejected status."
},
"pubEndDate": {
"type": "string",
"description": "ISO 8601 datetime for publication range end. Both pubStartDate and pubEndDate required together."
},
"exactPhrase": {
"type": "boolean",
"default": false,
"description": "When true, keyword matches as an exact phrase rather than ANDing its words independently. Requires keyword."
},
"lastModDays": {
"type": "integer",
"maximum": 9007199254740991,
"description": "CVEs last modified in the last N days (max 120; values over 120 are clamped). Mutually exclusive with lastModStartDate/lastModEndDate.",
"exclusiveMinimum": 0
},
"pubStartDate": {
"type": "string",
"description": "ISO 8601 datetime for publication range start. Both pubStartDate and pubEndDate required together. Mutually exclusive with pubDays."
},
"lastModEndDate": {
"type": "string",
"description": "ISO 8601 datetime for last-modified range end. Both required together."
},
"severityVersion": {
"enum": [
"v2",
"v3",
"v4"
],
"type": "string",
"default": "v3",
"description": "CVSS version to use for the severity filter. Default: v3 (maps to cvssV3Severity)."
},
"lastModStartDate": {
"type": "string",
"description": "ISO 8601 datetime for last-modified range start. Both required together. Mutually exclusive with lastModDays."
}
},
"additionalProperties": false
}