{
  "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": [
      {
        "canonicalProduct": "next.js",
        "canonicalVendor": "vercel",
        "cpe": "cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*",
        "ecosystem": null,
        "packageName": null,
        "product": "next.js",
        "purl": null,
        "vendor": "vercel",
        "version": null
      }
    ],
    "source": "NVD CVE API 2.0",
    "status": "known"
  },
  "canonical_url": "https://vuln.signal-radar.com/vuln/public-candidate/CVE-2026-64643/",
  "claims": [
    {
      "id": "claim:defensive-priority-candidate",
      "source_ids": [],
      "status": "observed",
      "text": "This item is a defensive prioritization candidate.",
      "verified_at": null
    }
  ],
  "exposure_hint": "authenticated boundary",
  "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": "2026-08-03T17:47:17.844388+00:00",
    "last_checked_at": null,
    "last_modified": "2026-07-29T14:37:25.703",
    "observed_at": "2026-08-03T17:21:47.396014+00:00",
    "published_at": "2026-07-27T18:16:59.160",
    "status": "observed"
  },
  "human_consequence": "This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary.",
  "human_impact_label": "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-2026-64643 for vercel / next.js: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary.",
  "id": "CVE-2026-64643",
  "impact_redaction": {
    "exploit_steps_removed": false,
    "payload_removed": false,
    "poc_removed": false,
    "source_derived_summary": true,
    "used_fallback_summary": false
  },
  "impact_tags": [
    "authenticated boundary review"
  ],
  "known_exploited": {
    "catalog_url": null,
    "date_added": null,
    "listed": false,
    "source": null
  },
  "public_human_impact": "Source describes authenticated boundary. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary.",
  "public_human_summary": "NVD: Next.js is a React framework for building full-stack web applications. NVD: In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. NVD: Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).",
  "public_human_what_to_verify": "Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.",
  "public_human_why_it_matters": "Source describes authenticated boundary. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary.; CVSS 6.3 (MEDIUM); EPSS percentile 41; not listed in KEV; Patch confirmed by source text; fixed version context: versions; sources: NVD, OSV, Vendor Advisory.",
  "public_safe_summary": "NVD: Next.js is a React framework for building full-stack web applications. NVD: In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. NVD: Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).",
  "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": "MEDIUM",
    "label": "MEDIUM",
    "score": 6.3,
    "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 / OSV / Vendor Advisory description; unsafe procedural detail is not shown.",
  "source_published_affected": "vendor/product: vercel / next.js",
  "source_published_description": "NVD: Next.js is a React framework for building full-stack web applications. NVD: In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. NVD: Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).",
  "source_published_evidence_refs": [
    {
      "source": "NVD",
      "type": "source_description",
      "url": null
    },
    {
      "source": "OSV",
      "type": "source_description",
      "url": null
    },
    {
      "source": "Vendor Advisory",
      "type": "source_description",
      "url": null
    },
    {
      "source": "Vendor Advisory",
      "type": "reference",
      "url": "https://github.com/vercel/next.js/commit/1b0c3ae912a3ad925c60065cc8d55b070fa8bcd3"
    },
    {
      "source": "Vendor Advisory",
      "type": "reference",
      "url": "https://github.com/vercel/next.js/commit/ff12a6124e1504f17b62de948b8a553fdecaef7b"
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://github.com/vercel/next.js/releases/tag/v15.5.21"
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://github.com/vercel/next.js/releases/tag/v16.2.11"
    },
    {
      "source": "Vendor Advisory",
      "type": "reference",
      "url": "https://github.com/vercel/next.js/security/advisories/GHSA-955p-x3mx-jcvp"
    },
    {
      "source": "Official Reference",
      "type": "reference",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64643"
    },
    {
      "source": "Official Reference",
      "type": "reference",
      "url": "https://osv.dev/vulnerability/CVE-2026-64643"
    }
  ],
  "source_published_impact": "Source describes authenticated boundary. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary.",
  "source_published_remediation": "Patch confirmed by source text; fixed version context: versions.",
  "source_published_summary": "NVD: Next.js is a React framework for building full-stack web applications. NVD: In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. NVD: Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).",
  "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-2026-64643"
    }
  ],
  "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: Next.js is a React framework for building full-stack web applications. NVD: In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, Next.js applications using App Router, Server Actions (use server) or use cache endpoints can be disclosed bypassing any authentication on the pages where these endpoints are usually used. NVD: Server Action IDs can be disclosed to unauthenticated users via publicly served client artifacts (for example, static chunks containing action references).",
  "title": "CVE-2026-64643 defensive priority signal",
  "urgency_reasons": [
    "affected product present",
    "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 medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for authenticated boundary; CVSS 6.3 (MEDIUM); EPSS percentile 41; affected product context: vercel / next.js; sources: NVD, OSV, Vendor Advisory."
}