{"schema_version":"1.9.0","id":"CVE-2025-9084","published":"2025-09-15T10:22:30.184Z","modified":"2026-08-12T03:51:11.805628238Z","aliases":["GHSA-hm95-jx66-g2gh","GO-2025-3960"],"related":["SUSE-SU-2025:03289-1","openSUSE-SU-2025:15564-1","openSUSE-SU-2026:21483-1"],"summary":"Open redirect in OAuth login","details":"Mattermost versions 10.5.x <= 10.5.9 fail to properly validate redirect URLs which allows attackers to redirect users to malicious sites via crafted OAuth login URLs","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"58bd34fd34cbd7d3da777d627b6cffdf8a532930"},{"fixed":"83a37a861d3ce87bea6cd3873917adbf524f1767"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"10.5.0"},{"fixed":"10.5.10"}],"source":"CPE_RANGE"}}],"versions":["v10.5.10-rc2","v10.5.10-rc1","v10.5.9","v10.5.9-rc4","v10.5.9-rc3","v10.5.9-rc2","v10.5.9-rc1","v10.5.8","v10.5.8-rc1","v10.5.7","v10.5.6-rc1","v10.5.6","v10.5.5","v10.5.5-rc1","v10.5.4-rc2","v10.5.4","v10.5.4-rc1","v10.5.3","v10.5.3-rc1","v10.5.2","v10.5.1","v10.5.1-rc2","v10.5.1-rc1","v10.5.0-rc6","v10.5.0","@mattermost/types@10.5.0","@mattermost/client@10.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9084.json"}}],"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9084.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9084"}],"database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-601"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9084.json","unresolved_ranges":[{"extracted_events":[{"introduced":"10.5.0"},{"last_affected":"10.5.9"}],"source":"AFFECTED_FIELD"}]},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}