{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9162", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2026-05-21T11:17:28.560Z", "datePublished": "2026-06-22T13:36:43.998Z", "dateUpdated": "2026-06-22T13:36:43.998Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "11.7.0", "status": "affected", "version": "11.7.0", "versionType": "semver"}, {"lessThanOrEqual": "11.6.2", "status": "affected", "version": "11.6.0", "versionType": "semver"}, {"lessThanOrEqual": "11.5.5", "status": "affected", "version": "11.5.0", "versionType": "semver"}, {"lessThanOrEqual": "10.11.17", "status": "affected", "version": "10.11.0", "versionType": "semver"}, {"version": "11.8.0", "status": "unaffected"}, {"version": "11.7.1", "status": "unaffected"}, {"version": "11.6.3", "status": "unaffected"}, {"version": "11.5.6", "status": "unaffected"}, {"version": "10.11.18", "status": "unaffected"}]}], "credits": [{"lang": "en", "type": "finder", "value": "winfunc"}], "descriptions": [{"lang": "en", "value": "Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to invalidate cached authentication state for active WebSocket connections during global session revocation, which allows a user with an existing WebSocket connection to remain authenticated and continue receiving real-time events until the cached session expires or the client reconnects.. Mattermost Advisory ID: MMSA-2026-00664"}], "metrics": [{"cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "baseSeverity": "MEDIUM", "baseScore": 4.3}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-613: Insufficient Session Expiration", "cweId": "CWE-613"}]}], "references": [{"url": "https://mattermost.com/security-updates", "name": "MMSA-2026-00664", "tags": ["vendor-advisory"]}], "solutions": [{"value": "Update Mattermost to versions 11.8.0, 11.7.1, 11.6.3, 11.5.6, 10.11.18 or higher.", "lang": "en"}], "source": {"advisory": "MMSA-2026-00664", "defect": ["https://mattermost.atlassian.net/browse/MM-68542"], "discovery": "EXTERNAL"}, "title": "Global session revocation does not invalidate active WebSocket connections", "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2026-06-22T13:36:43.998Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"created": "2026-06-22T14:45:05.433280+00:00", "updated": "2026-06-22T14:45:05.433287+00:00", "vendors": []}