{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Mattermost","vendor":"Mattermost","versions":[{"lessThanOrEqual":"10.5.4","status":"affected","version":"10.5.0","versionType":"semver"},{"lessThanOrEqual":"9.11.13","status":"affected","version":"9.11.0","versionType":"semver"},{"status":"unaffected","version":"10.8.0"},{"status":"unaffected","version":"10.5.5"},{"status":"unaffected","version":"9.11.14"}]}],"source":"responsibledisclosure@mattermost.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"65E6CEFD-19CA-46F8-9EEA-5C6E02518ADA","versionEndExcluding":"9.11.14","versionStartIncluding":"9.11.0","vulnerable":true},{"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","matchCriteriaId":"F10C4C79-AB51-4C99-8301-7C2ACE5D89F7","versionEndExcluding":"10.5.5","versionStartIncluding":"10.5.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"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}."},{"lang":"es","value":"Las versiones de Mattermost 10.5.x &lt;= 10.5.4, 9.11.x &lt;= 9.11.13 no restringen adecuadamente el acceso de la API a la información del equipo, lo que permite que los usuarios invitados omitan los permisos y vean información sobre equipos públicos de los que no son miembros a través de una llamada API directa a /api/v4/teams/{team_id}."}],"id":"CVE-2025-4128","lastModified":"2026-06-17T09:32:33.813","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"exploitabilityScore":1.6,"impactScore":1.4,"source":"responsibledisclosure@mattermost.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"exploitabilityScore":2.8,"impactScore":1.4,"source":"nvd@nist.gov","type":"Primary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2025-4128","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2025-06-11T13:12:34.593975Z","version":"2.0.3"}}]},"published":"2025-06-11T11:15:23.143","references":[{"source":"responsibledisclosure@mattermost.com","tags":["Vendor Advisory"],"url":"https://mattermost.com/security-updates"}],"sourceIdentifier":"responsibledisclosure@mattermost.com","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-863"}],"source":"responsibledisclosure@mattermost.com","type":"Secondary"}]}