{"id":"GHSA-9hh7-6558-qfp2","revision":"d698d151e85147ae97e35a72ca2a1f96","records":[{"revision":"d698d151e85147ae97e35a72ca2a1f96","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-9hh7-6558-qfp2","aliases":["CVE-2025-55074","GO-2025-4133"],"title":"Mattermost allows other users to determine when users had read channels via channel member objects","description":"Mattermost versions 10.11.x <= 10.11.3, and 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects.","state":0,"publishedAt":"2025-11-18T18:32:52+00:00","modifiedAt":"2025-11-27T08:52:50.122365+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.11.0"},{"kind":"fixed","version":"10.11.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.5.0"},{"kind":"fixed","version":"10.5.12"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"8.0.0-20250905150616-ba86dfc5876b6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2025-55074","https://github.com/mattermost/mattermost/pull/33835","https://github.com/mattermost/mattermost/pull/33905","https://github.com/mattermost/mattermost/commit/98acefe911dd9de7edf47a7d825dd99f53141a52","https://github.com/mattermost/mattermost/commit/ba86dfc5876b354b9d3c20ff45c08ca6f8426149","https://github.com/mattermost/mattermost/commit/d72d437f1567ba0b639b6e4fd73bab06c51baab5","https://github.com/advisories/GHSA-9hh7-6558-qfp2","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"sourceUrl":"https://github.com/advisories/GHSA-9hh7-6558-qfp2","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-9hh7-6558-qfp2","identifiers":["GHSA-9hh7-6558-qfp2","CVE-2025-55074","GO-2025-4133"]},"retained":false,"historicalAffected":[]}],"coverage":[]}