CVE-2026-66858

{
  "etk_id": "ETK-2026-359",
  "cve_id": "CVE-2026-66858",
  "display_id": "CVE-2026-66858",
  "ghsa_id": "GHSA-hfqq-j57v-2292",
  "euvd_id": "EUVD-2026-91585",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stack exhaustion in Apache Thrift protocol skipping",
  "summary": "Apache Thrift releases before 0.25.0 are affected in the Python C++ accelerator and the PHP, Perl, Lua, Smalltalk, and OCaml bindings; pure-Python protocols are excluded. An attacker who can send Thrift messages to a service using an affected binding may exhaust the process stack through deeply recursive unknown data.",
  "mitigation": "Upgrade Apache Thrift to version 0.25.0 or later. Prioritize services that accept untrusted Thrift messages through an affected binding.",
  "vendor": "Apache Software Foundation",
  "product": "Apache Thrift",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": "pypi",
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "thrift",
      "purl": "pkg:pypi/thrift"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "apache/thrift",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "Thrift",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "Lua",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "Smalltalk",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 0.25.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "0.25.0"
      ],
      "package_name": "OCaml",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": 0.0026,
  "epss_percentile": 0.1699,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 16.19539215,
  "t0_at": "2026-10-02T12:27:31.412000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-02T12:27:31.412000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T12:27:31.412000+00:00",
      "url": "https://github.com/advisories/GHSA-hfqq-j57v-2292"
    }
  }
}