{"id":"CVE-2025-6226","details":"Mattermost versions 10.5.x \u003c= 10.5.6, 10.8.x \u003c= 10.8.1, 10.7.x \u003c= 10.7.3, 9.11.x \u003c= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they don't have access to via guessing the PendingPostID of recently created posts.","aliases":["GHSA-7h34-9chr-58qh","GO-2025-3819"],"modified":"2026-03-23T05:32:08.035872Z","published":"2025-07-18T09:15:26.993Z","related":["openSUSE-SU-2025:15405-1"],"references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"fixed":"8f8612c63783eff8188330973e4f533b323b4e32"},{"introduced":"58bd34fd34cbd7d3da777d627b6cffdf8a532930"},{"fixed":"341d662939e9482c7701d9fd35b066e5eabbc5a5"},{"introduced":"f6b324a9d71843e8f48eba9e90dfbeabcbac1ae7"},{"fixed":"dca75cc154561525603434721b5db1c48b5cdd6d"},{"introduced":"bb105f3a2785636ad53b2d0bf4027900d41f6a67"},{"fixed":"c2330fb5058d9a15d4d16eaf2c282ae61d45788c"}],"database_specific":{"versions":[{"introduced":"9.11.0"},{"fixed":"9.11.17"},{"introduced":"10.5.0"},{"fixed":"10.5.7"},{"introduced":"10.7.0"},{"fixed":"10.7.4"},{"introduced":"10.8.0"},{"fixed":"10.8.2"}]}}],"versions":["@mattermost/client@10.5.0","@mattermost/client@10.7.0","@mattermost/client@10.8.0","@mattermost/client@9.11.0","@mattermost/types@10.5.0","@mattermost/types@10.7.0","@mattermost/types@10.8.0","@mattermost/types@9.11.0","mattermost-redux@10.7.0","mattermost-redux@10.8.0","v10.5.0","v10.5.0-rc6","v10.5.1","v10.5.1-rc1","v10.5.1-rc2","v10.5.2","v10.5.3","v10.5.3-rc1","v10.5.4","v10.5.4-rc1","v10.5.4-rc2","v10.5.5","v10.5.5-rc1","v10.5.6","v10.5.6-rc1","v10.7.0","v10.7.0-rc2","v10.7.1","v10.7.2","v10.7.2-rc1","v10.7.3","v10.7.3-rc1","v10.7.4-rc1","v10.8.0","v10.8.0-rc3","v10.8.1","v9.11.0","v9.11.0-rc3","v9.11.1","v9.11.1-rc1","v9.11.10","v9.11.10-rc1","v9.11.11","v9.11.11-rc1","v9.11.12","v9.11.12-rc1","v9.11.13","v9.11.13-rc1","v9.11.14","v9.11.15","v9.11.16","v9.11.16-rc1","v9.11.17-rc1","v9.11.2","v9.11.2-rc1","v9.11.2-rc2","v9.11.3","v9.11.3-rc1","v9.11.3-rc2","v9.11.4","v9.11.4-rc1","v9.11.5","v9.11.5-rc1","v9.11.6","v9.11.6-rc1","v9.11.6-rc2","v9.11.7","v9.11.7-rc1","v9.11.7-rc2","v9.11.7-rc3","v9.11.8","v9.11.9","v9.11.9-rc1","v9.11.9-rc2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6226.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}