{"id":"CVE-2023-1777","summary":"Information disclosure in linked message previews","details":"Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.\n\n","aliases":["BIT-mattermost-2023-1777","GHSA-3wq5-3f56-v5xc"],"modified":"2026-08-27T03:31:07.329554223Z","published":"2023-03-31T11:35:22.813Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"6.3.0"},{"last_affected":"7.7.1"},{"introduced":"6.3.0"},{"last_affected":"7.1.5"},{"introduced":"6.3.0"},{"last_affected":"7.8.0"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"Mattermost","cwe_ids":["CWE-200"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1777.json"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1777.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1777"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0"},{"fixed":"5a8ebc95d0cbf61d974430d4c03c3ffef36d4543"},{"introduced":"63149c4869898f8c1d3a94ea728370ec4a07575f"},{"last_affected":"f14c24391ca84740d90a29ec8b67579326eaa236"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"7.1.6"},{"introduced":"7.7.1"},{"last_affected":"7.7.1"},{"introduced":"7.8.0"},{"last_affected":"7.8.0"}],"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:7.7.1:*:*:*:*:*:*:*","cpe:2.3:a:mattermost:mattermost_server:7.8.0:*:*:*:*:*:*:*"]}}],"versions":["7.7.1","7.8.0","v7.8.0","cloud-2023-01-26-1","v7.1.5","cloud-2022-11-24-1","cloud-2022-11-11-1","v7.1.4","cloud-2022-10-06-1","cloud-2022-09-08-1","v7.1.3","cloud-2022-08-10-1","v7.1.2","v7.1.1","v7.1.0","cloud-2022-07-20-1","cloud-2022-06-29-1","v5.2.0-rc2","v5.2.0-rc1","v5.1.0-rc1","v5.0.0-rc1","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-2023-1777.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:H/I:N/A:N"}]}