{"schema_version":"1.9.0","id":"CVE-2025-9078","published":"2025-09-15T10:10:06.886Z","modified":"2026-08-12T03:51:34.322032409Z","aliases":["GHSA-9p92-x77w-9fw2","GO-2025-3959"],"related":["SUSE-SU-2025:03289-1","openSUSE-SU-2025:15564-1","openSUSE-SU-2026:21483-1"],"summary":"Weak cache keys lead to post IDOR and link preview poisoning","details":"Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"fixed":"11c36f4d1e44c36a85aa682becaa7519f63761cf"},{"introduced":"58bd34fd34cbd7d3da777d627b6cffdf8a532930"},{"fixed":"c602a4a78e1f60b9a97ee5bce509ecad4177340c"},{"introduced":"bb105f3a2785636ad53b2d0bf4027900d41f6a67"},{"fixed":"6880f9b5908f20c6c4db1456d3a27603af01dd72"},{"introduced":"14775836a78c8257de08fff229d364755346eff9"},{"fixed":"3b7a835de6c3e0a43212516f91d7e679daa56bb6"},{"introduced":"c8bd5c937551a4e9ad23f5a4fd8aaf7604d046dd"},{"fixed":"70c3cb2c1eef66484d5455217295684a49b7c3f1"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"9.11.0"},{"fixed":"9.11.18"},{"introduced":"10.5.0"},{"fixed":"10.5.9"},{"introduced":"10.8.0"},{"fixed":"10.8.4"},{"introduced":"10.9.0"},{"fixed":"10.9.4"},{"introduced":"10.10.0"},{"fixed":"10.10.2"}],"source":"CPE_RANGE"}}],"versions":["v10.10.2-rc4","v10.10.2-rc3","v10.10.2-rc2","v10.10.2-rc1","v10.8.4-rc4","v10.9.4-rc1","v10.5.9-rc4","v9.11.18-rc4","v9.11.18-rc3","v10.10.1","v10.5.9-rc3","v10.10.1-rc1","v10.8.4-rc3","v10.9.3-rc4","v10.9.3","v10.5.9-rc2","v10.8.4-rc2","v10.9.3-rc3","v9.11.18-rc2","v10.10.0","v10.9.3-rc2","v9.11.18-rc1","v10.8.4-rc1","v10.9.3-rc1","v10.5.9-rc1","v10.9.2-rc1","v10.9.2","v9.11.17","v10.5.8","v10.8.3","v10.9.1","v10.8.2","v10.5.8-rc1","v9.11.17-rc1","v10.9.0-rc4","v10.9.0","mattermost-redux@10.8.0","@mattermost/types@10.8.0","@mattermost/client@10.8.0","v10.5.7","v9.11.16-rc1","v9.11.16","v10.5.6-rc1","v10.5.6","v10.8.1","v9.11.15","v10.5.5","v10.5.5-rc1","v9.11.14","v10.8.0-rc3","v10.8.0","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-2025-9078.json"}}],"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9078.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9078"}],"database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-328"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9078.json","unresolved_ranges":[{"extracted_events":[{"introduced":"10.8.0"},{"last_affected":"10.8.3"},{"introduced":"10.5.0"},{"last_affected":"10.5.8"},{"introduced":"9.11.0"},{"last_affected":"9.11.17"},{"introduced":"10.10.0"},{"last_affected":"10.10.1"},{"introduced":"10.9.0"},{"last_affected":"10.9.3"}],"source":"AFFECTED_FIELD"}]},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}