{
  "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-2026-91135/",
  "claims": [
    {
      "id": "claim:defensive-priority-candidate",
      "source_ids": [],
      "status": "observed",
      "text": "This item is a defensive prioritization candidate.",
      "verified_at": null
    }
  ],
  "exposure_hint": "exposure unknown",
  "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": "2026-10-09T10:39:28.808826+00:00",
    "last_checked_at": null,
    "last_modified": "2026-10-02T18:17:06.963",
    "observed_at": "2026-10-09T10:38:48.194640+00:00",
    "published_at": "2026-10-02T11:17:37.277",
    "status": "observed"
  },
  "human_consequence": "The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure.",
  "human_impact_label": "memory safety review",
  "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-2026-91135: The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure.",
  "id": "CVE-2026-91135",
  "impact_redaction": {
    "exploit_steps_removed": false,
    "payload_removed": false,
    "poc_removed": false,
    "source_derived_summary": true,
    "used_fallback_summary": false
  },
  "impact_tags": [
    "memory safety review"
  ],
  "known_exploited": {
    "catalog_url": null,
    "date_added": null,
    "listed": false,
    "source": null
  },
  "public_human_impact": "Source describes memory safety review. Possible impact: The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure.",
  "public_human_summary": "NVD: Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. NVD: When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. NVD: Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the...",
  "public_human_what_to_verify": "Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.",
  "public_human_why_it_matters": "Source describes memory safety review. Possible impact: The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure.; CVSS 9.2 (CRITICAL); EPSS percentile 38; not listed in KEV; Patch confirmed by source text; fixed version context: 0.25.0; sources: NVD.",
  "public_safe_summary": "NVD: Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. NVD: When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. NVD: Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the...",
  "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": "CRITICAL",
    "label": "CRITICAL",
    "score": 9.2,
    "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: Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. NVD: When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. NVD: Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the...",
  "source_published_evidence_refs": [
    {
      "source": "NVD",
      "type": "source_description",
      "url": null
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1"
    },
    {
      "source": "Reference",
      "type": "reference",
      "url": "https://lists.apache.org/thread/rbpwlhlxnv2qgyk8cfscp2d2fd3p0ojb"
    },
    {
      "source": "Official Reference",
      "type": "reference",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91135"
    }
  ],
  "source_published_impact": "Source describes memory safety review. Possible impact: The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure.",
  "source_published_remediation": "Patch confirmed by source text; fixed version context: 0.25.0.",
  "source_published_summary": "NVD: Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. NVD: When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. NVD: Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the...",
  "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-2026-91135"
    }
  ],
  "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: Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. NVD: When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. NVD: Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the...",
  "title": "CVE-2026-91135 defensive priority signal",
  "urgency_reasons": [
    "CVSS CRITICAL",
    "vendor advisory present",
    "recent update"
  ],
  "what_to_verify": "Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.",
  "why_it_matters": "The affected component has memory-safety risk that may lead to crash, privilege, or code-execution impact depending on exposure; CVSS 9.2 (CRITICAL); EPSS percentile 38; sources: NVD."
}