{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-76258",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-76258",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-19T21:34:16.596Z",
    "updatedAt": "2026-08-26T15:23:19.681Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Use of Hard-coded Cryptographic Key through Companion App Registration in Splunk Secure Gateway",
      "summary": "In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.10, 3.9.24, and 3.8.71, a user who does not hold the \"admin\" or \"power\" Splunk roles could register an arbitrary companion app and cause Splunk Secure Gateway to forward mobile user requests, including tokens that compromise all relevant data available to the affected mobile user, to an attacker-controlled Uniform Resource Locator (URL). The vulnerability is possible because a hard-coded cryptographic key in the Splunk Secure Gateway companion app registration handler allows for arbitrary callback URL registration without restriction. For more information see Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) in the Splunk documentation.",
      "affected": [
        {
          "vendor": "Splunk",
          "product": "Splunk Enterprise",
          "versions": [
            {
              "version": "10.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.4.2"
            },
            {
              "version": "10.2",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.2.6"
            },
            {
              "version": "10.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "10.0.9"
            },
            {
              "version": "9.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "9.4.14"
            }
          ]
        },
        {
          "vendor": "Splunk",
          "product": "Splunk Secure Gateway",
          "versions": [
            {
              "version": "3.10",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.10.10"
            },
            {
              "version": "3.9",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.9.24"
            },
            {
              "version": "3.8",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.8.71"
            }
          ]
        }
      ]
    }
  }
}