CVE-2026-111497

{
  "etk_id": "ETK-2026-2448",
  "cve_id": "CVE-2026-111497",
  "display_id": "CVE-2026-111497",
  "ghsa_id": "GHSA-9v8h-qqgm-4m35",
  "euvd_id": "EUVD-2026-108169",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Buffer overflow in Google Brotli decoder",
  "summary": "Google Brotli decoder versions 1.0.3 through 1.2.0 are affected by a buffer overflow during Brotli stream processing. An unauthenticated attacker may cause memory disclosure, denial of service, or potential code execution where an application decodes Brotli-compressed data supplied by the attacker.",
  "mitigation": "Upgrade github.com/google/brotli to 1.0.10, 1.1.1, or 1.2.1, as appropriate for the maintained release line. Until upgraded, restrict processing of untrusted Brotli-compressed input.",
  "vendor": "Google",
  "product": "Brotli",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.0.3, < 1.0.10",
        ">= 1.1.0, < 1.1.1",
        ">= 1.2.0, < 1.2.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.0.10",
        "1.1.1",
        "1.2.1"
      ],
      "package_name": "github.com/google/brotli",
      "purl": null
    }
  ],
  "cwes": [
    787
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 31.58008815,
  "t0_at": "2026-10-22T13:35:41.975000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-10-21T15:52:21+00:00",
      "days": -0.9051038773148148,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T13:35:41.975000+00:00",
      "url": "https://github.com/CaterMaoZi/CVE-2026-111497-POC"
    },
    "trigger_signal": {
      "at": "2026-10-22T13:35:41.975000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T13:35:41.975000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111497"
    }
  }
}