CVE-2026-76288

{
  "etk_id": "ETK-2026-2370",
  "cve_id": "CVE-2026-76288",
  "display_id": "CVE-2026-76288",
  "ghsa_id": "GHSA-hcwv-2x2x-8285",
  "euvd_id": "EUVD-2026-107663",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated request-header denial of service in Splunk Web",
  "summary": "Splunk Enterprise releases before 10.4.4, 10.2.8, 10.0.11, and 9.4.16 are affected by a denial-of-service flaw in the Splunk Web JavaScript logger endpoint. An unauthenticated remote attacker can cause Splunk Web to stop serving requests; the service remains unavailable until Splunk Enterprise is restarted. Exploitation requires network access to the affected Splunk Web endpoint.",
  "mitigation": "Upgrade Splunk Enterprise to 10.4.4, 10.2.8, 10.0.11, or 9.4.16, as appropriate for the deployed release branch. Until upgrading, restrict untrusted network access to Splunk Web.",
  "vendor": "Splunk",
  "product": "Splunk Enterprise",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.4, < 10.4.4",
        ">= 10.2, < 10.2.8",
        ">= 10.0, < 10.0.11",
        ">= 9.4, < 9.4.16"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "10.4.4",
        "10.2.8",
        "10.0.11",
        "9.4.16"
      ],
      "package_name": "Splunk Enterprise",
      "purl": null
    }
  ],
  "cwes": [
    400
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 59.816317383333335,
  "t0_at": "2026-10-21T22:51:50.487000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T00:15:59.699360+00:00",
      "days": 0.058439957870370374,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T22:51:50.487000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-21T22:51:50.487000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T22:51:50.487000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-76288"
    }
  }
}