{"id":"CVE-2025-4128","state":"PUBLISHED","title":"Mattermost Guest User Information Disclosure Vulnerability","description":"Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","publishedAt":"2025-06-11T10:25:04.917Z","updatedAt":"2025-06-11T13:12:40.338Z","severity":{"score":3.1,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"Mattermost"},"assigner":"Mattermost","products":["Mattermost Mattermost"],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"10.5.0","status":"affected","lessThanOrEqual":"10.5.4","versionType":"semver"},{"version":"9.11.0","status":"affected","lessThanOrEqual":"9.11.13","versionType":"semver"},{"version":"10.8.0","status":"unaffected"},{"version":"10.5.5","status":"unaffected"},{"version":"9.11.14","status":"unaffected"}]}],"references":["https://mattermost.com/security-updates"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:09:23.771Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/4xxx/CVE-2025-4128.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-4128","state":"PUBLISHED","datePublished":"2025-06-11T10:25:04.917Z","dateUpdated":"2025-06-11T13:12:40.338Z","assignerShortName":"Mattermost","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateReserved":"2025-04-30T07:45:45.749Z"},"containers":{"cna":{"title":"Mattermost Guest User Information Disclosure Vulnerability","descriptions":[{"lang":"en","value":"Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}."}],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"10.5.0","status":"affected","lessThanOrEqual":"10.5.4","versionType":"semver"},{"version":"9.11.0","status":"affected","lessThanOrEqual":"9.11.13","versionType":"semver"},{"version":"10.8.0","status":"unaffected"},{"version":"10.5.5","status":"unaffected"},{"version":"9.11.14","status":"unaffected"}]}],"references":[{"url":"https://mattermost.com/security-updates"}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","baseSeverity":"LOW","baseScore":3.1},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","type":"CWE","description":"CWE-863: Incorrect Authorization"}]}],"providerMetadata":{"shortName":"Mattermost","orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateUpdated":"2025-06-11T10:25:04.917Z"},"credits":[{"lang":"en","type":"finder","value":"hackit_bharat"}],"solutions":[{"value":"Update Mattermost to versions 10.8.0, 10.5.5, 9.11.14 or higher.","lang":"en"}],"source":{"advisory":"MMSA-2025-00468","defect":["https://mattermost.atlassian.net/browse/MM-63790"],"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-11T13:12:34.593975Z","id":"CVE-2025-4128","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":"2025-06-11T13:12:40.338Z"}}]}}}