{
  "id": "CVE-2020-26547",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-02-01T02:15:15.377",
  "lastModified": "2024-11-21T05:20:03.110",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Monal before 4.9 does not implement proper sender verification on MAM and Message Carbon (XEP-0280) results. This allows a remote attacker (able to send stanzas to a victim) to inject arbitrary messages into the local history, with full control over the sender and receiver displayed to the victim."
    },
    {
      "lang": "es",
      "value": "Monal versiones anteriores a 4.9, no implementa la comprobaci\u00f3n apropiada del remitente en los resultados de MAM y Message Carbon (XEP-0280). Esto permite a un atacante remoto (capaz de enviar estrofas a una v\u00edctima) inyectar mensajes arbitrarios en el historial local, con control total sobre el remitente y el receptor desplegado a la v\u00edctima"
    }
  ],
  "metrics": {
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      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "baseScore": 5.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
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  ],
  "configurations": [
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      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
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  "references": [
    {
      "url": "https://github.com/anurodhp/Monal/commits/develop",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://monal.im/blog/cve-2020-26547/",
      "source": "cve@mitre.org",
      "tags": [
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    },
    {
      "url": "https://github.com/anurodhp/Monal/commits/develop",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "url": "https://monal.im/blog/cve-2020-26547/",
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      "tags": [
        "Vendor Advisory"
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    }
  ]
}