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vuln-cve/data/2025/12xxx/CVE-2025-12419.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-12419",
"assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
"state": "PUBLISHED",
"assignerShortName": "Mattermost",
"dateReserved": "2025-10-28T16:09:58.730Z",
"datePublished": "2025-11-27T15:55:44.815Z",
"dateUpdated": "2026-02-26T16:07:27.036Z"
},
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Mattermost",
"vendor": "Mattermost",
"versions": [
{
"lessThanOrEqual": "10.12.1",
"status": "affected",
"version": "10.12.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "10.11.4",
"status": "affected",
"version": "10.11.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "10.5.12",
"status": "affected",
"version": "10.5.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "11.0.3",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
},
{
"version": "11.1.0",
"status": "unaffected"
},
{
"version": "10.12.2",
"status": "unaffected"
},
{
"version": "10.11.5",
"status": "unaffected"
},
{
"version": "10.5.13",
"status": "unaffected"
},
{
"version": "11.0.4",
"status": "unaffected"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "daw10"
}
],
"descriptions": [
{
"lang": "en",
"value": "Mattermost versions 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12, 11.0.x <= 11.0.3 fail to properly validate OAuth state tokens during OpenID Connect authentication which allows an authenticated attacker with team creation privileges to take over a user account via manipulation of authentication data during the OAuth completion flow. This requires email verification to be disabled (default: disabled), OAuth/OpenID Connect to be enabled, and the attacker to control two users in the SSO system with one of them never having logged into Mattermost."
}
],
"metrics": [
{
"cvssV3_1": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"baseSeverity": "CRITICAL",
"baseScore": 9.9
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"description": "CWE-303: Incorrect Implementation of Authentication Algorithm",
"cweId": "CWE-303"
}
]
}
],
"references": [
{
"url": "https://mattermost.com/security-updates"
}
],
"solutions": [
{
"value": "Update Mattermost to versions 11.1.0, 10.12.2, 10.11.5, 10.5.13, 11.0.4 or higher.",
"lang": "en"
}
],
"source": {
"advisory": "MMSA-2025-00547",
"defect": [
"https://mattermost.atlassian.net/browse/MM-66371"
],
"discovery": "EXTERNAL"
},
"title": "Account takeover on OAuth/OpenID-enabled servers",
"providerMetadata": {
"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
"shortName": "Mattermost",
"dateUpdated": "2025-11-27T17:18:07.520Z"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2025-12419",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-12-02T04:55:59.011337Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-02-26T16:07:27.036Z"
}
}
]
}
}