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CVE-2019-20843

Estado: ModificadaAlta (7.5)—

Se detectó un problema en Mattermost Server versiones anteriores a 5.18.0, 5.17.2, 5.16.4, 5.15.4 y 5.9.7. Se presentan permisos débiles para los archivos de configuración

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mattermost — Mattermost Server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-20843",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-19T14:15:10.433",
  "references": [
    {
      "url": "https://mattermost.com/security-updates/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://mattermost.com/security-updates/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-281"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. There are weak permissions for configuration files."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Mattermost Server versiones anteriores a 5.18.0, 5.17.2, 5.16.4, 5.15.4 y 5.9.7. Se presentan permisos débiles para los archivos de configuración"
    }
  ],
  "lastModified": "2026-06-17T02:31:18.180",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "versionEndExcluding": "5.9.7"
            },
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              "vulnerable": true,
              "matchCriteriaId": "87675506-EA42-48F1-B12B-C137D58A31BC",
              "versionEndExcluding": "5.15.4",
              "versionStartIncluding": "5.15.0"
            },
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              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88A5E809-55F9-4B8C-8CC9-D2263632626E",
              "versionEndExcluding": "5.16.4",
              "versionStartIncluding": "5.16.0"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "1861A510-327D-452B-A4FA-12204ECA2358",
              "versionEndExcluding": "5.17.2",
              "versionStartIncluding": "5.17.0"
            },
            {
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            },
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            },
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              "vulnerable": true,
              "matchCriteriaId": "F46E3522-C7EB-4139-84F5-AFCED85D3C19"
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost_server:5.18.0:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7A353365-71E8-4382-9212-BD4495F5CF7E"
            }
          ],
          "operator": "OR"
        }
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    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}