{"schema_version":"1.7.3","id":"GO-2025-4133","published":"2025-11-25T18:12:18Z","modified":"2026-03-03T04:57:38.131658Z","aliases":["CVE-2025-55074","GHSA-9hh7-6558-qfp2"],"summary":"Mattermost allows other users to determine when users had read channels via channel member objects in github.com/mattermost/mattermost-server","details":"Mattermost allows other users to determine when users had read channels via channel member objects in github.com/mattermost/mattermost-server.\n\nNOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.\n\n(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)\n\nThe additional affected modules and versions are: github.com/mattermost/mattermost/server/v8 before v8.0.0-20250905150616-ba86dfc5876b6.","affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.5.0+incompatible"},{"fixed":"10.5.12+incompatible"},{"introduced":"10.11.0+incompatible"},{"fixed":"10.11.4+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2025-4133.json"}},{"package":{"name":"github.com/mattermost/mattermost-server/v5","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server/v5"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2025-4133.json"}},{"package":{"name":"github.com/mattermost/mattermost-server/v6","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2025-4133.json"}},{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{"custom_ranges":[{"events":[{"introduced":"0"},{"fixed":"8.0.0-20250905150616-ba86dfc5876b6"}],"type":"ECOSYSTEM"}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2025-4133.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-9hh7-6558-qfp2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55074"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/98acefe911dd9de7edf47a7d825dd99f53141a52"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/ba86dfc5876b354b9d3c20ff45c08ca6f8426149"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/d72d437f1567ba0b639b6e4fd73bab06c51baab5"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/pull/33835"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/pull/33905"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2025-4133"}}