{
  "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-2026-3115",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-3115",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-26T16:23:05.887Z",
    "updatedAt": "2026-03-26T17:51:14.689Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "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": "Guest users can view group member IDs without respecting view restrictions",
      "summary": "Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to apply view restrictions when retrieving group member IDs, which allows authenticated guest users to enumerate user IDs outside their allowed visibility scope via the group retrieval endpoint.. Mattermost Advisory ID: MMSA-2026-00594",
      "affected": [
        {
          "vendor": "Mattermost",
          "product": "Mattermost",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "11.2.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.2.2"
            },
            {
              "version": "10.11.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "10.11.10"
            },
            {
              "version": "11.4.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.4.0"
            },
            {
              "version": "11.3.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.3.1"
            },
            {
              "version": "11.5.0",
              "status": "unaffected"
            },
            {
              "version": "11.2.3",
              "status": "unaffected"
            },
            {
              "version": "10.11.11",
              "status": "unaffected"
            },
            {
              "version": "11.4.1",
              "status": "unaffected"
            },
            {
              "version": "11.3.2",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}