CVE-2024-39274
Estado: AnalizadaMedia (6.5)—
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
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.34%
- Percentil entre todas las CVEs puntuadas: 25
- Fecha de la puntuación: 7/10/2026
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)
CWE
- CWE-284
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2024-39274",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-39274",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2024-08-02T14:46:09.694576Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "responsibledisclosure@mattermost.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8.7,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.8,
"exploitabilityScore": 2.3
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "responsibledisclosure@mattermost.com",
"affectedData": [
{
"vendor": "Mattermost",
"product": "Mattermost",
"versions": [
{
"status": "affected",
"version": "9.9.0"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver",
"lessThanOrEqual": "9.5.6"
},
{
"status": "affected",
"version": "9.7.0",
"versionType": "semver",
"lessThanOrEqual": "9.7.5"
},
{
"status": "affected",
"version": "9.8.0",
"versionType": "semver",
"lessThanOrEqual": "9.8.1"
},
{
"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"
}
],
"defaultStatus": "unaffected"
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"affectedData": [
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.9.0"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver",
"lessThanOrEqual": "9.5.6"
},
{
"status": "affected",
"version": "9.7.0",
"versionType": "semver",
"lessThanOrEqual": "9.7.5"
},
{
"status": "affected",
"version": "9.8.0",
"versionType": "semver",
"lessThanOrEqual": "9.8.1"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.10.0:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.10.0"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.9.1:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.9.1"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.5.7:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.5.7"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.7.6:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.7.6"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:mattermost:mattermost:9.8.2:*:*:*:*:*:*:*"
],
"vendor": "mattermost",
"product": "mattermost",
"versions": [
{
"status": "affected",
"version": "9.8.2"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2024-08-01T15:15:12.150",
"references": [
{
"url": "https://mattermost.com/security-updates",
"tags": [
"Vendor Advisory"
],
"source": "responsibledisclosure@mattermost.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "responsibledisclosure@mattermost.com",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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"
},
{
"lang": "es",
"value": " Las versiones de Mattermost 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 y 9.8.x <= 9.8.1 no validan correctamente que el canal que proviene del mensaje de sincronización es un canal compartido, cuando los canales compartidos están habilitados, lo que permite que un control remoto malicioso agregue usuarios a equipos y canales arbitrarios"
}
],
"lastModified": "2026-06-17T07:41:36.727",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0942D308-9462-4C2A-A9FE-838EB5842E02",
"versionEndExcluding": "9.5.7",
"versionStartIncluding": "9.5.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "642355DC-0EF1-4631-89D0-694AB7C9EF78",
"versionEndExcluding": "9.7.6",
"versionStartIncluding": "9.7.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "00E80458-F38E-46EB-98FD-1CADD3FCE335",
"versionEndExcluding": "9.8.2",
"versionStartIncluding": "9.8.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DA215755-4D08-4B4D-9736-DAF54D2F0B9C"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "responsibledisclosure@mattermost.com"
}