{
  "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-2026-13491",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-13491",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-28T11:15:10.481Z",
    "updatedAt": "2026-06-29T12:29:15.720Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "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": "78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service",
      "summary": "A vulnerability was detected in 78 xiaozhi-esp32 up to 2.2.6. This vulnerability affects the function Application::GetInstance of the file main/protocols/mqtt_protocol.cc of the component MQTT Goodbye Handler. Performing a manipulation of the argument session_id results in denial of service. The attack is possible to be carried out remotely. The complexity of an attack is rather high. It is stated that the exploitability is difficult. The exploit is now public and may be used. The patch is named e182471f8c5a22434346bd98da34d3b66c8c8b3e. It is recommended to apply a patch to fix this issue.",
      "affected": [
        {
          "vendor": "78",
          "product": "xiaozhi-esp32",
          "versions": [
            {
              "version": "2.2.0",
              "status": "affected"
            },
            {
              "version": "2.2.1",
              "status": "affected"
            },
            {
              "version": "2.2.2",
              "status": "affected"
            },
            {
              "version": "2.2.3",
              "status": "affected"
            },
            {
              "version": "2.2.4",
              "status": "affected"
            },
            {
              "version": "2.2.5",
              "status": "affected"
            },
            {
              "version": "2.2.6",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}