{"id":"CVE-2024-42406","summary":"Unauthorized access on archived channels","details":"Mattermost versions 9.11.x \u003c= 9.11.0, 9.10.x \u003c= 9.10.1, 9.9.x \u003c= 9.9.2 and 9.5.x \u003c= 9.5.8 fail to properly authorize requests when viewing archived channels is disabled, which allows an attacker to retrieve post and file information about archived channels. Examples are flagged or unread posts as well as files.","aliases":["BIT-mattermost-2024-42406"],"modified":"2026-08-27T03:30:50.058427054Z","published":"2024-09-26T08:04:22.939Z","database_specific":{"cna_assigner":"Mattermost","cwe_ids":["CWE-284"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42406.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"9.11.0"},{"last_affected":"9.11.0"},{"introduced":"9.10.0"},{"last_affected":"9.10.1"},{"introduced":"9.9.0"},{"last_affected":"9.9.2"},{"introduced":"9.5.0"},{"last_affected":"9.5.8"}]}]},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42406.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42406"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"99d819d25d0b16b3faed901b1fe5c41de7655e9c"},{"fixed":"e8de27b043b2971472f30cb2e6c77bf4f8978486"},{"introduced":"4179e17b491ec5292ca6e157d7b216b464bce397"},{"fixed":"8f059c576a6fec5dad8b8b1e62bf2a5602081401"},{"introduced":"60c5bb46dfa8192efa5a13c746423f0e7696b8bc"},{"fixed":"3b1cbb8015fed0484e573d78e3b0fd28f2fc8b91"},{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"last_affected":"2bcb5a99e38959fb69aea0f17daddee9490f8f31"}],"database_specific":{"cpe":["cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:9.11.0:-:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:9.11.0:rc3:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:9.11.0:rc1:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:9.11.0:rc2:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.5.0"},{"fixed":"9.5.9"},{"introduced":"9.9.0"},{"fixed":"9.9.3"},{"introduced":"9.10.0"},{"fixed":"9.10.2"},{"introduced":"9.11.0-NA"},{"last_affected":"9.11.0-NA"},{"introduced":"9.11.0-rc3"},{"last_affected":"9.11.0-rc3"},{"introduced":"9.11.0-rc1"},{"last_affected":"9.11.0-rc1"},{"introduced":"9.11.0-rc2"},{"last_affected":"9.11.0-rc2"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["9.11.0-NA","9.11.0-rc1","9.11.0-rc2","v9.9.2-rc2","v9.9.2","v9.5.8-rc2","v9.5.8","v9.10.1-rc3","v9.10.1","v9.10.1-rc2","v9.5.8-rc1","v9.9.2-rc1","v9.10.1-rc1","v9.5.7-rc3","v9.5.7","v9.10.0-rc3","v9.10.0","@mattermost/types@9.10.0","@mattermost/client@9.10.0","v9.9.1-rc4","v9.9.1","v9.9.1-rc3","v9.5.7-rc2","v9.9.1-rc2","v9.9.1-rc1","v9.5.7-rc1","v9.5.6","v9.9.0-rc4","v9.9.0","@mattermost/types@9.9.0","@mattermost/client@9.9.0","v9.5.6-rc2","v9.5.6-rc1","v9.5.5-rc1","v9.5.5","v9.5.4-rc2","v9.5.4","v9.5.4-rc1","v9.5.3","v9.5.3-rc3","v9.5.3-rc2","v9.5.3-rc1","v9.5.2","v9.5.1-rc1","v9.5.1","v9.5.0-rc3","v9.5.0","@mattermost/types@9.5.0","@mattermost/client@9.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42406.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}]}