{"id":"CVE-2025-13870","sourceIdentifier":"responsibledisclosure@mattermost.com","published":"2025-12-02T10:16:01.270","lastModified":"2026-10-18T18:10:00.100","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to"},{"lang":"es","value":"Las versiones de Mattermost 10.11.x menor o igual que 10.11.4, 10.5.x menor o igual que 10.5.12 fallan al validar el permiso del usuario al acceder a los archivos y suscribirse al bloque en Boards, lo que permite a un usuario autenticado acceder a archivos de otras pizarras y pudo suscribirse al bloque de otras pizarras a las que el usuario no tiene acceso."}],"affected":[{"source":"responsibledisclosure@mattermost.com","affectedData":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"10.11.0","lessThanOrEqual":"10.11.4","versionType":"semver","status":"affected"},{"version":"10.5.0","lessThanOrEqual":"10.5.12","versionType":"semver","status":"affected"},{"version":"11.1.0","status":"unaffected"},{"version":"10.11.5","status":"unaffected"},{"version":"10.5.13","status":"unaffected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"responsibledisclosure@mattermost.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-12-02T14:38:15.737706Z","id":"CVE-2025-13870","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"responsibledisclosure@mattermost.com","type":"Secondary","description":[{"lang":"en","value":"CWE-306"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","versionStartIncluding":"10.5.0","versionEndExcluding":"10.5.13","matchCriteriaId":"91D99F7F-B4EE-447C-9B77-82DD64B1D83A"},{"vulnerable":true,"criteria":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","versionStartIncluding":"10.11.0","versionEndExcluding":"10.11.5","matchCriteriaId":"A8368192-621C-4043-827E-DB4F6946AD92"}]}]}],"references":[{"url":"https://mattermost.com/security-updates","source":"responsibledisclosure@mattermost.com","tags":["Vendor Advisory"]}]}