{"id":"CVE-2025-8023","state":"PUBLISHED","title":"Path Traversal in Template Upload Allows Uploading Files Outside Target Directory","description":"Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which allows a system admin to perform path traversal attacks via malicious path components, potentially enabling malicious file placement outside intended directories.","publishedAt":"2025-08-21T07:51:37.130Z","updatedAt":"2025-08-21T14:50:55.341Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","source":"Mattermost"},"assigner":"Mattermost","products":["Mattermost Mattermost"],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"10.8.0","status":"affected","lessThanOrEqual":"10.8.3","versionType":"semver"},{"version":"10.5.0","status":"affected","lessThanOrEqual":"10.5.8","versionType":"semver"},{"version":"9.11.0","status":"affected","lessThanOrEqual":"9.11.17","versionType":"semver"},{"version":"10.9.0","status":"affected","lessThanOrEqual":"10.9.2","versionType":"semver"},{"version":"10.10.0","status":"unaffected"},{"version":"10.8.4","status":"unaffected"},{"version":"10.5.9","status":"unaffected"},{"version":"9.11.18","status":"unaffected"},{"version":"10.9.3","status":"unaffected"}]}],"references":["https://mattermost.com/security-updates"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8023.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-8023","state":"PUBLISHED","datePublished":"2025-08-21T07:51:37.130Z","dateUpdated":"2025-08-21T14:50:55.341Z","assignerShortName":"Mattermost","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateReserved":"2025-07-22T08:03:06.489Z"},"containers":{"cna":{"title":"Path Traversal in Template Upload Allows Uploading Files Outside Target Directory","descriptions":[{"lang":"en","value":"Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which allows a system admin to perform path traversal attacks via malicious path components, potentially enabling malicious file placement outside intended directories."}],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"10.8.0","status":"affected","lessThanOrEqual":"10.8.3","versionType":"semver"},{"version":"10.5.0","status":"affected","lessThanOrEqual":"10.5.8","versionType":"semver"},{"version":"9.11.0","status":"affected","lessThanOrEqual":"9.11.17","versionType":"semver"},{"version":"10.9.0","status":"affected","lessThanOrEqual":"10.9.2","versionType":"semver"},{"version":"10.10.0","status":"unaffected"},{"version":"10.8.4","status":"unaffected"},{"version":"10.5.9","status":"unaffected"},{"version":"9.11.18","status":"unaffected"},{"version":"10.9.3","status":"unaffected"}]}],"references":[{"url":"https://mattermost.com/security-updates"}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","baseSeverity":"MEDIUM","baseScore":6.8},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","type":"CWE","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}],"providerMetadata":{"shortName":"Mattermost","orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateUpdated":"2025-08-21T07:51:37.130Z"},"credits":[{"lang":"en","type":"finder","value":"Dawid Kulikowski (daw10)"}],"solutions":[{"value":"Update Mattermost to versions 10.10.0, 10.8.4, 10.5.9, 9.11.18, 10.9.3 or higher.","lang":"en"}],"source":{"advisory":"MMSA-2025-00499","defect":["https://mattermost.atlassian.net/browse/MM-64596"],"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-21T14:50:47.920308Z","id":"CVE-2025-8023","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-21T14:50:55.341Z"}}]}}}