{
  "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-2026-95666",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-95666",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-22T13:11:13.798Z",
    "updatedAt": "2026-09-22T13:57:00.428Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "Unbounded post ID array in the bulk reactions endpoint allows denial of service",
      "summary": "Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to limit the length of the post ID array accepted by the bulk reactions endpoint which allows an authenticated user to cause excessive database load via a crafted request to {{POST /api/v4/posts/ids/reactions}}.. Mattermost Advisory ID: MMSA-2026-00771",
      "affected": [
        {
          "vendor": "Mattermost",
          "product": "Mattermost",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "11.9.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.9.1"
            },
            {
              "version": "11.8.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.8.5"
            },
            {
              "version": "11.7.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.7.10"
            },
            {
              "version": "11.10.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "11.10.1"
            },
            {
              "version": "11.11.0",
              "status": "unaffected"
            },
            {
              "version": "11.9.2",
              "status": "unaffected"
            },
            {
              "version": "11.8.6",
              "status": "unaffected"
            },
            {
              "version": "11.7.11",
              "status": "unaffected"
            },
            {
              "version": "11.10.2",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}