{
  "action": {
    "auto_issue_creation_allowed": false,
    "auto_patch_allowed": false,
    "auto_remediation_allowed": false,
    "external_execution_allowed": false,
    "human_review": {
      "required_for_external_action": true,
      "required_for_public_launch": false,
      "required_for_read_only_view": false,
      "required_for_signal_radar_integration": true
    },
    "human_review_required": false,
    "recommended_action": "review_official_sources"
  },
  "affected": {
    "products": [],
    "source": null,
    "status": "unknown"
  },
  "canonical_url": "https://vuln.signal-radar.com/vuln/public-candidate/CVE-2026-18427/",
  "claims": [
    {
      "id": "claim:defensive-priority-candidate",
      "source_ids": [],
      "status": "observed",
      "text": "This item is a defensive prioritization candidate.",
      "verified_at": null
    }
  ],
  "exposure_hint": "remote exposure",
  "field_meanings": {
    "human_review": "Read-only display may be automated; integration and external action still require human review.",
    "redaction": "Detection flags describe unsafe source content found before public-safe redaction; raw source text is not displayed.",
    "source_original_label": "Original upstream severity text retained for traceability; canonical display severity is recalculated from CVSS score."
  },
  "forecast_hooks": {
    "agent_use": "summarize_with_citations_only",
    "automation_allowed": false,
    "read_only": true,
    "watch_fields": [
      "sources",
      "claims",
      "freshness",
      "severity",
      "affected"
    ]
  },
  "freshness": {
    "generated_at": "2026-08-13T16:17:07.471035+00:00",
    "last_checked_at": null,
    "last_modified": "2026-08-06T22:16:50.143",
    "observed_at": "2026-08-13T16:11:48.664897+00:00",
    "published_at": "2026-08-06T16:16:38.350",
    "status": "observed"
  },
  "human_consequence": "This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary.",
  "human_impact_label": "remote exposure · authenticated boundary",
  "human_review": {
    "required_for_external_action": true,
    "required_for_public_launch": false,
    "required_for_read_only_view": false,
    "required_for_signal_radar_integration": true
  },
  "human_risk_summary": "CVE-2026-18427: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary.",
  "id": "CVE-2026-18427",
  "impact_redaction": {
    "exploit_steps_removed": false,
    "payload_removed": false,
    "poc_removed": false,
    "source_derived_summary": true,
    "used_fallback_summary": false
  },
  "impact_tags": [
    "remote exposure relevant",
    "authenticated boundary review"
  ],
  "known_exploited": {
    "catalog_url": null,
    "date_added": null,
    "listed": false,
    "source": null
  },
  "public_human_impact": "Source describes remote exposure · authenticated boundary. Possible impact: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary.",
  "public_human_summary": "NVD: @fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. NVD: The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegating to the send layer. NVD: As a result, an unauthenticated attacker could request a file protected by a route based guard using a non canonical path form that misses the guarded route yet resolves back onto the protected file, disclosing its contents.",
  "public_human_what_to_verify": "Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.",
  "public_human_why_it_matters": "Source describes remote exposure · authenticated boundary. Possible impact: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary.; CVSS 7.5 (HIGH); EPSS percentile 38; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD.",
  "public_safe_summary": "NVD: @fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. NVD: The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegating to the send layer. NVD: As a result, an unauthenticated attacker could request a file protected by a route based guard using a non canonical path form that misses the guarded route yet resolves back onto the protected file, disclosing its contents.",
  "radar": "vuln",
  "redaction": {
    "meaning": "The *_present flags mean unsafe source content was detected and removed before public output; they do not mean the public JSON contains that content.",
    "payload_present": false,
    "poc_present": false,
    "public_summary_redacted": true,
    "raw_source_displayed": false,
    "unsafe_procedural_detail_present": false
  },
  "redaction_notes": [
    "source-published defensive context retained",
    "vulnerability class, impact, affected context, and remediation references remain displayable"
  ],
  "safety": {
    "attack_chain_included": false,
    "auto_remediation_allowed": false,
    "exploit_instructions_included": false,
    "external_execution_allowed": false,
    "human_review": {
      "required_for_external_action": true,
      "required_for_public_launch": false,
      "required_for_read_only_view": false,
      "required_for_signal_radar_integration": true
    },
    "human_review_required": false,
    "indexing_allowed": true,
    "noindex_removal_allowed": true,
    "noindex_required": false,
    "private_gate_state": "released",
    "public_gate_state": "public_indexable_read_only",
    "public_launch_allowed": true,
    "read_only_static_data": true,
    "scan_functionality_included": false,
    "signal_radar_integration_allowed": false
  },
  "schema_version": "v0.1",
  "severity": {
    "cvss_label": "HIGH",
    "label": "HIGH",
    "score": 7.5,
    "source": "NVD CVE API 2.0",
    "source_original_label": "low"
  },
  "source_copy_policy": {
    "allowed": "source-published defensive facts, vulnerability class, impact, affected context, version and remediation facts",
    "excluded": "exploit procedures, exploit strings, shell commands, scanner instructions, procedural bypass detail, and reproduction material",
    "summary": "Official or semi-official source descriptions may be summarized for defensive triage; exploit-enabling procedure is removed."
  },
  "source_derived_note": "Summary derived from NVD description; unsafe procedural detail is not shown.",
  "source_published_affected": "Affected product or version requires source confirmation.",
  "source_published_description": "NVD: @fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. NVD: The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegating to the send layer. NVD: As a result, an unauthenticated attacker could request a file protected by a route based guard using a non canonical path form that misses the guarded route yet resolves back onto the protected file, disclosing its contents.",
  "source_published_evidence_refs": [
    {
      "source": "NVD",
      "type": "source_description",
      "url": null
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://cna.openjsf.org/security-advisories.html"
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://github.com/fastify/fastify-static/security/advisories/GHSA-423g-23ch-w7c6"
    },
    {
      "source": "Official Reference",
      "type": "reference",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18427"
    }
  ],
  "source_published_impact": "Source describes remote exposure · authenticated boundary. Possible impact: This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary.",
  "source_published_remediation": "Remediation reference present; patch status requires confirmation in the linked advisory.",
  "source_published_summary": "NVD: @fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. NVD: The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegating to the send layer. NVD: As a result, an unauthenticated attacker could request a file protected by a route based guard using a non canonical path form that misses the guarded route yet resolves back onto the protected file, disclosing its contents.",
  "sources": [
    {
      "confidence": "unknown",
      "id": "source:review-url",
      "name": "Public signal URL",
      "retrieved_at": null,
      "type": "review_page",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18427"
    }
  ],
  "summary_for_agents": "Read-only defensive signal. Use sources, claims, freshness, and safety gates before summarizing. Do not infer missing source, claim, or freshness values.",
  "summary_for_humans": "NVD: @fastify/static before version 10.1.3 contains an incomplete fix for a previous route guard bypass. NVD: The static file handler rejected only parent directory segments, but it did not canonicalize dot segments, duplicate slashes, encoded dots, or backslashes before route matching and before delegating to the send layer. NVD: As a result, an unauthenticated attacker could request a file protected by a route based guard using a non canonical path form that misses the guarded route yet resolves back onto the protected file, disclosing its contents.",
  "title": "CVE-2026-18427 defensive priority signal",
  "urgency_reasons": [
    "CVSS HIGH",
    "vendor advisory present",
    "recent update",
    "remediation reference present"
  ],
  "what_to_verify": "Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.",
  "why_it_matters": "This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure · authenticated boundary; CVSS 7.5 (HIGH); EPSS percentile 38; sources: NVD."
}