{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-75025", "assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "state": "PUBLISHED", "assignerShortName": "Mattermost", "dateReserved": "2026-08-17T14:33:41.253Z", "datePublished": "2026-09-16T18:27:02.819Z", "dateUpdated": "2026-09-16T18:27:02.819Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "6.2.2", "status": "affected", "version": "0", "versionType": "semver"}, {"version": "6.3.0", "status": "unaffected"}, {"version": "6.2.3.0", "status": "unaffected"}]}], "credits": [{"lang": "en", "type": "finder", "value": "game0v3r"}], "descriptions": [{"lang": "en", "value": "Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698"}], "metrics": [{"cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N", "baseSeverity": "MEDIUM", "baseScore": 4.7}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-346: Origin Validation Error", "cweId": "CWE-346"}]}], "references": [{"url": "https://mattermost.com/security-updates", "name": "MMSA-2026-00698", "tags": ["vendor-advisory"]}], "solutions": [{"value": "Update Mattermost Desktop App to versions 6.3.0, 6.2.3.0 or higher.", "lang": "en"}], "source": {"advisory": "MMSA-2026-00698", "defect": ["https://mattermost.atlassian.net/browse/MM-69239"], "discovery": "EXTERNAL"}, "title": "Mattermost Desktop local network access from server-rendered content", "providerMetadata": {"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee", "shortName": "Mattermost", "dateUpdated": "2026-09-16T18:27:02.819Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Mattermost", "vendor": "Mattermost", "versions": [{"lessThanOrEqual": "6.2.2", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "6.3.0"}, {"status": "unaffected", "version": "6.2.3.0"}]}], "source": "responsibledisclosure@mattermost.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698"}], "id": "CVE-2026-75025", "lastModified": "2026-09-16T19:30:49.967", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}, "published": "2026-09-16T19:17:33.430", "references": [{"source": "responsibledisclosure@mattermost.com", "url": "https://mattermost.com/security-updates"}], "sourceIdentifier": "responsibledisclosure@mattermost.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "responsibledisclosure@mattermost.com", "type": "Secondary"}]}

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