{"id":"CVE-2019-20869","details":"An issue was discovered in Mattermost Server before 5.10.0, 5.9.1, 5.8.2, and 4.10.9. A non-member could change the Update/Patch Channel endpoint for a private channel.","modified":"2026-08-27T08:15:27.253091Z","published":"2020-06-19T16:15:10.483Z","references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0"},{"fixed":"23bfd530da31cb835264928458607371dbfd962e"},{"introduced":"7e5fda43bda67cd061e527b64046f241c2d6cc32"},{"fixed":"3ff8ae8111f37a601af0a17af95feadc23a8f7ea"},{"introduced":"24f11a12758fe75ce06269be7f9fb7bb790aec43"},{"fixed":"b505a849aebc50f9bb89896a7a16c4aae437a0c2"},{"introduced":"5ef499caae2bb751438b19151a9fcb4b27830bca"},{"fixed":"c201065b4f25d4794ae86c077efb60c6f934fbc8"},{"introduced":"abfe0a38d33825f6311b9a7ddc499d76f2e62e08"},{"last_affected":"dc70ab42034da17eaf23be5a86abae81b3f1cd21"}],"database_specific":{"cpe":["cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc1:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc2:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc3:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc4:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc5:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:5.10.0:rc6:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"4.10.9"},{"introduced":"5.7.0"},{"fixed":"5.7.3"},{"introduced":"5.8.0"},{"fixed":"5.8.2"},{"introduced":"5.9.0"},{"fixed":"5.9.1"},{"introduced":"5.10.0-rc1"},{"last_affected":"5.10.0-rc1"},{"introduced":"5.10.0-rc2"},{"last_affected":"5.10.0-rc2"},{"introduced":"5.10.0-rc3"},{"last_affected":"5.10.0-rc3"},{"introduced":"5.10.0-rc4"},{"last_affected":"5.10.0-rc4"},{"introduced":"5.10.0-rc5"},{"last_affected":"5.10.0-rc5"},{"introduced":"5.10.0-rc6"},{"last_affected":"5.10.0-rc6"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["5.10.0-rc1","5.10.0-rc2","5.10.0-rc4","5.10.0-rc5","5.10.0-rc6","v5.10.1-rc1","v5.10.1","v5.10.0-rc6","v5.10.0","v4.10.8-rc1","v4.10.8","v5.9.0-rc4","v5.9.0","v5.8.1-rc2","v5.8.1","v5.10.0-rc5","v5.10.0-rc4","v5.10.0-rc3","v5.10.0-rc2","v5.10.0-rc1","v5.8.1-rc1","v4.10.7-rc1","v4.10.7","v5.7.2-rc1","v5.7.2","v5.8.0-rc4","v5.8.0","v4.10.6-rc1","v4.10.6","v5.7.1-rc1","v5.7.1","v5.7.0-rc6","v5.7.0","v4.10.5-rc1","v4.10.5","v4.10.4-rc1","v4.10.4","v4.10.3-rc1","v4.10.3","v4.10.2-rc1","v4.10.2","v4.10.1-rc1","v4.10.1","v4.10.0-rc5","v4.10.0-rc4","v4.10.0","v4.10.0-rc3","v4.10.0-rc2","v4.10.0-rc1","v4.9.0-rc1","v4.8.0-rc1","v4.7.0-rc1","v4.6.0-rc2","v4.6.0-rc1","v4.5.0-rc1","v4.4.0-rc1","v4.3.0-rc1","v4.2.0-rc1","v0.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20869.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}