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        "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
        "state": "PUBLISHED",
        "assignerShortName": "Mattermost",
        "dateReserved": "2026-07-17T09:41:38.446Z",
        "datePublished": "2026-08-17T14:26:22.724Z",
        "dateUpdated": "2026-08-17T15:26:05.729Z"
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    "containers": {
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            "affected": [
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                    "defaultStatus": "unaffected",
                    "product": "Mattermost",
                    "vendor": "Mattermost",
                    "versions": [
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                            "lessThanOrEqual": "11.7.6",
                            "status": "affected",
                            "version": "11.7.0",
                            "versionType": "semver"
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                            "lessThanOrEqual": "10.11.21",
                            "status": "affected",
                            "version": "10.11.0",
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                            "version": "11.9.0",
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                            "version": "10.11.22",
                            "status": "unaffected"
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                {
                    "lang": "en",
                    "type": "finder",
                    "value": "KennySki"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 Mattermost failed to restrict OAuth deauthorization and personal access token management endpoints to direct user sessions, which allowed an OAuth app with a delegated user token to revoke the user's authorizations or tokens for other integrations via account-management endpoints.. Mattermost Advisory ID: MMSA-2026-00704"
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                    "cvssV3_1": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "LOW",
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                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                        "baseSeverity": "LOW",
                        "baseScore": 2.7
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                    "format": "CVSS",
                    "scenarios": [
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                            "lang": "en",
                            "value": "GENERAL"
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            "problemTypes": [
                {
                    "descriptions": [
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                            "lang": "en",
                            "type": "CWE",
                            "description": "CWE-863: Incorrect Authorization",
                            "cweId": "CWE-863"
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            "references": [
                {
                    "url": "https://mattermost.com/security-updates",
                    "name": "MMSA-2026-00704",
                    "tags": [
                        "vendor-advisory"
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            ],
            "solutions": [
                {
                    "value": "Update Mattermost to versions 11.9.0, 11.7.7, 10.11.22 or higher.",
                    "lang": "en"
                }
            ],
            "source": {
                "advisory": "MMSA-2026-00704",
                "defect": [
                    "https://mattermost.atlassian.net/browse/MM-69395"
                ],
                "discovery": "EXTERNAL"
            },
            "title": "Delegated OAuth tokens could revoke unrelated OAuth application authorizations",
            "providerMetadata": {
                "orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
                "shortName": "Mattermost",
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        "adp": [
            {
                "metrics": [
                    {
                        "other": {
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                            "content": {
                                "timestamp": "2026-08-17T14:50:55.419627Z",
                                "id": "CVE-2026-16045",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                "title": "CISA ADP Vulnrichment",
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