{"schema_version":"1.9.0","id":"CVE-2025-9081","published":"2025-09-19T19:36:14.702Z","modified":"2026-08-12T03:51:13.916935878Z","aliases":["GHSA-f72g-52v7-mg3p","GO-2025-3978"],"related":["SUSE-SU-2025:3799-1","openSUSE-SU-2025:15576-1","openSUSE-SU-2026:21483-1"],"summary":"IDOR in board file download allows any user to download any file by UUID","details":"Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"fixed":"8f8612c63783eff8188330973e4f533b323b4e32"},{"introduced":"58bd34fd34cbd7d3da777d627b6cffdf8a532930"},{"fixed":"c602a4a78e1f60b9a97ee5bce509ecad4177340c"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"9.11.0"},{"fixed":"9.11.17"},{"introduced":"10.5.0"},{"fixed":"10.5.9"}],"source":"CPE_RANGE"}}],"versions":["v10.5.9-rc4","v10.5.9-rc3","v10.5.9-rc2","v10.5.9-rc1","v10.5.8","v10.5.8-rc1","v9.11.17-rc1","v10.5.7","v9.11.16-rc1","v9.11.16","v10.5.6-rc1","v10.5.6","v9.11.15","v10.5.5","v10.5.5-rc1","v9.11.14","v10.5.4-rc2","v10.5.4","v9.11.13","v10.5.4-rc1","v9.11.13-rc1","v10.5.3","v9.11.12","v10.5.3-rc1","v9.11.12-rc1","v9.11.11-rc1","v9.11.11","v9.11.10","v10.5.2","v9.11.10-rc1","v9.11.9","v10.5.1","v10.5.1-rc2","v10.5.1-rc1","v9.11.9-rc2","v9.11.9-rc1","v10.5.0-rc6","v10.5.0","@mattermost/types@10.5.0","@mattermost/client@10.5.0","v9.11.8","v9.11.7-rc3","v9.11.7","v9.11.7-rc2","v9.11.7-rc1","v9.11.6","v9.11.6-rc2","v9.11.6-rc1","v9.11.5","v9.11.5-rc1","v9.11.4","v9.11.4-rc1","v9.11.3","v9.11.3-rc2","v9.11.3-rc1","v9.11.2","v9.11.2-rc2","v9.11.2-rc1","v9.11.1-rc1","v9.11.1","v9.11.0-rc3","v9.11.0","@mattermost/types@9.11.0","@mattermost/client@9.11.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9081.json"}}],"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9081.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9081"}],"database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9081.json","unresolved_ranges":[{"extracted_events":[{"introduced":"10.5.0"},{"last_affected":"10.5.8"},{"introduced":"9.11.0"},{"last_affected":"9.11.17"}],"source":"AFFECTED_FIELD"}]},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}