FKIE_CVE-2024-39274

Vulnerability from fkie_nvd - Published: 2024-08-01 15:15 - Updated: 2026-06-17 07:41
Severity
8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels
References
responsibledisclosure@mattermost.comhttps://mattermost.com/security-updatesVendor Advisory
Impacted products
Vendor Product Version
mattermost mattermost *
mattermost mattermost *
mattermost mattermost *
mattermost mattermost 9.9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Mattermost",
          "vendor": "Mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.9.0"
            },
            {
              "lessThanOrEqual": "9.5.6",
              "status": "affected",
              "version": "9.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.7.5",
              "status": "affected",
              "version": "9.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.8.1",
              "status": "affected",
              "version": "9.8.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "9.10.0"
            },
            {
              "status": "unaffected",
              "version": "9.9.1"
            },
            {
              "status": "unaffected",
              "version": "9.5.7"
            },
            {
              "status": "unaffected",
              "version": "9.7.6"
            },
            {
              "status": "unaffected",
              "version": "9.8.2"
            }
          ]
        }
      ],
      "source": "responsibledisclosure@mattermost.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "lessThanOrEqual": "9.5.6",
              "status": "affected",
              "version": "9.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.7.5",
              "status": "affected",
              "version": "9.7.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.8.1",
              "status": "affected",
              "version": "9.8.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.10.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.10.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.9.1:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.9.1"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.5.7:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.5.7"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.7.6:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.7.6"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:mattermost:mattermost:9.8.2:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "mattermost",
          "vendor": "mattermost",
          "versions": [
            {
              "status": "affected",
              "version": "9.8.2"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0942D308-9462-4C2A-A9FE-838EB5842E02",
              "versionEndExcluding": "9.5.7",
              "versionStartIncluding": "9.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "642355DC-0EF1-4631-89D0-694AB7C9EF78",
              "versionEndExcluding": "9.7.6",
              "versionStartIncluding": "9.7.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "00E80458-F38E-46EB-98FD-1CADD3FCE335",
              "versionEndExcluding": "9.8.2",
              "versionStartIncluding": "9.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DA215755-4D08-4B4D-9736-DAF54D2F0B9C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mattermost versions 9.9.x \u003c= 9.9.0, 9.5.x \u003c= 9.5.6, 9.7.x \u003c= 9.7.5 and 9.8.x \u003c= 9.8.1 fail to properly validate that\u00a0the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels"
    },
    {
      "lang": "es",
      "value": " Las versiones de Mattermost 9.9.x \u0026lt;= 9.9.0, 9.5.x \u0026lt;= 9.5.6, 9.7.x \u0026lt;= 9.7.5 y 9.8.x \u0026lt;= 9.8.1 no validan correctamente que el canal que proviene del mensaje de sincronizaci\u00f3n es un canal compartido, cuando los canales compartidos est\u00e1n habilitados, lo que permite que un control remoto malicioso agregue usuarios a equipos y canales arbitrarios"
    }
  ],
  "id": "CVE-2024-39274",
  "lastModified": "2026-06-17T07:41:36.727",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 5.8,
        "source": "responsibledisclosure@mattermost.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39274",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-08-02T14:46:09.694576Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-08-01T15:15:12.150",
  "references": [
    {
      "source": "responsibledisclosure@mattermost.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "sourceIdentifier": "responsibledisclosure@mattermost.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "responsibledisclosure@mattermost.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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