{"id":"GO-2026-4729","summary":"Mattermost allows a removed team member to enumerate all public channels within a private team in github.com/mattermost/mattermost-server","details":"Mattermost allows a removed team member to enumerate all public channels within a private team 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/v5 before v5.3.2-0.20260113182106-a18b80ba4c32.","aliases":["CVE-2026-2458","GHSA-679f-wmrg-qf57"],"modified":"2026-03-23T18:45:15.030361Z","published":"2026-03-23T18:14:47Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4729","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-679f-wmrg-qf57"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2458"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/a18b80ba4c324b74b3d47951c33957305af4a099"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.11.0-rc1+incompatible"},{"fixed":"10.11.11+incompatible"},{"introduced":"11.2.0-rc1+incompatible"},{"fixed":"11.2.3+incompatible"},{"introduced":"11.3.0-rc1+incompatible"},{"fixed":"11.3.1+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4729.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":{"custom_ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.2-0.20260113182106-a18b80ba4c32"}]}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4729.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-2026-4729.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"},{"fixed":"8.0.0-20260113182106-a18b80ba4c32"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4729.json"}}],"schema_version":"1.7.5"}