CVE-2025-9078
Full vulnerability record from the local CVENow database.
Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing
Severity
MEDIUM
CVSS score
4.3
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2025-09-15 10:15:32.627000
Last modified
2026-10-19 17:10:00.173000
View original CVE JSON
{
"id": "CVE-2025-9078",
"sourceIdentifier": "[email protected]",
"published": "2025-09-15T10:15:32.627",
"lastModified": "2026-10-19T17:10:00.173",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing"
},
{
"lang": "es",
"value": "Las versiones de Mattermost 10.8.x menor o igual que 10.8.3, 10.5.x menor o igual que 10.5.8, 9.11.x menor o igual que 9.11.17, 10.10.x menor o igual que 10.10.1, 10.9.x menor o igual que 10.9.3 no validan correctamente las claves de caché para los metadatos de enlaces, lo que permite a los usuarios autenticados acceder a publicaciones no autorizadas y envenenar las previsualizaciones de enlaces mediante ataques de colisión de hash en el hashing FNV-1."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Mattermost",
"product": "Mattermost",
"defaultStatus": "unaffected",
"versions": [
{
"version": "10.8.0",
"lessThanOrEqual": "10.8.3",
"versionType": "semver",
"status": "affected"
},
{
"version": "10.5.0",
"lessThanOrEqual": "10.5.8",
"versionType": "semver",
"status": "affected"
},
{
"version": "9.11.0",
"lessThanOrEqual": "9.11.17",
"versionType": "semver",
"status": "affected"
},
{
"version": "10.10.0",
"lessThanOrEqual": "10.10.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "10.9.0",
"lessThanOrEqual": "10.9.3",
"versionType": "semver",
"status": "affected"
},
{
"version": "10.11.0",
"status": "unaffected"
},
{
"version": "10.8.4",
"status": "unaffected"
},
{
"version": "10.5.9",
"status": "unaffected"
},
{
"version": "9.11.18",
"status": "unaffected"
},
{
"version": "10.10.2",
"status": "unaffected"
},
{
"version": "10.9.4",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-09-15T13:53:35.598807Z",
"id": "CVE-2025-9078",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-328"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"versionStartIncluding": "9.11.0",
"versionEndExcluding": "9.11.18",
"matchCriteriaId": "4E2C0E13-B52A-4539-80B6-DC0FE8FF2E56"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"versionStartIncluding": "10.5.0",
"versionEndExcluding": "10.5.9",
"matchCriteriaId": "B95DCAE5-07C2-46B1-B03E-ED3FB9B2C568"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"versionStartIncluding": "10.8.0",
"versionEndExcluding": "10.8.4",
"matchCriteriaId": "BE00156D-6ACB-4F8C-BFFC-03A8127199A4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"versionStartIncluding": "10.9.0",
"versionEndExcluding": "10.9.4",
"matchCriteriaId": "BB49CDD5-C206-4BEC-8CB5-D757DCC43208"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"versionStartIncluding": "10.10.0",
"versionEndExcluding": "10.10.2",
"matchCriteriaId": "F3861BBC-7E0F-4782-9666-4EF12C1ABDF5"
}
]
}
]
}
],
"references": [
{
"url": "https://mattermost.com/security-updates",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}