{"id":"GO-2026-6547","summary":"Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server","details":"Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server","aliases":["CVE-2026-8823","GHSA-xmfh-3ccg-c9fx"],"modified":"2026-10-01T20:45:12.227552731Z","published":"2026-10-01T20:23:38Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-6547","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xmfh-3ccg-c9fx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8823"},{"type":"WEB","url":"https://docs.mattermost.com/security-guide/security-updates"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/7972fc53f5c0b0175879a9737308a87b42db1f0b"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/9bd77d3fc4d2af3f7f0259a205174e76a1a276e1"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/c9bf3609fb9a3e5c2de94c50742c9b91fd723e3d"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/d9a55e394cd5bc15edb49e9606bec8fec03ac4c6"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/pull/36487"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/releases/tag/v10.11.18"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/releases/tag/v11.7.1"}],"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+incompatible"},{"fixed":"10.11.18+incompatible"},{"introduced":"11.7.0+incompatible"},{"fixed":"11.7.1+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6547.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-2026-6547.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-2026-6547.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":"8.0.0-20260518160100-9bd77d3fc4d2"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6547.json"}}],"schema_version":"1.9.0"}