CVE-2026-100354

{
  "etk_id": "ETK-2026-1900",
  "cve_id": "CVE-2026-100354",
  "display_id": "CVE-2026-100354",
  "ghsa_id": "GHSA-g8cf-rcjf-c8cf",
  "euvd_id": "EUVD-2026-102162",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Uncontrolled recursion in kin-openapi schema validation",
  "summary": "kin-openapi versions before v0.149.0 can recurse without bound while validating requests, responses, or schemas containing circular allOf, anyOf, or oneOf references. An attacker can terminate an affected process by reaching a cyclic schema during runtime validation, provided the application accepts an attacker-controlled specification or deploys a specification with such a cycle.",
  "mitigation": "Upgrade github.com/getkin/kin-openapi to v0.149.0 or later. Until upgraded, reject or remove circular allOf, anyOf, and oneOf schema references from OpenAPI specifications used for runtime validation.",
  "vendor": "go",
  "product": "github.com/getkin/kin-openapi",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "v0.144.0"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "v0.149.0"
      ],
      "package_name": "github.com/getkin/kin-openapi",
      "purl": "pkg:golang/github.com/getkin/kin-openapi"
    }
  ],
  "cwes": [
    674
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": 0.0044,
  "epss_percentile": 0.3647,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 14.096257933333334,
  "t0_at": "2026-10-15T16:02:00.566000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-08-28T09:15:59+00:00",
      "days": -48.281962569444445,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T16:02:00.566000+00:00",
      "url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-g8cf-rcjf-c8cf"
    },
    "trigger_signal": {
      "at": "2026-10-15T16:02:00.566000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T16:02:00.566000+00:00",
      "url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-g8cf-rcjf-c8cf"
    }
  }
}