{"id":"CVE-2026-75587","summary":"Plaintext pre-auth secret exposure via Desktop App diagnostics report","details":"Mattermost Desktop App versions \u003c=6.2 6.2.2.0 fail to redact the pre-auth secret when generating a diagnostics report, which allows a local attacker with access to a user's diagnostics report or log files to obtain the plaintext pre-auth secret configured for a connected server via inspecting the Server Connectivity (Step-3) diagnostics output. Mattermost Advisory ID: MMSA-2026-00716","modified":"2026-08-24T03:47:22.909994494Z","published":"2026-08-17T22:09:49.590Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75587.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"6.2.2"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"Mattermost","cwe_ids":["CWE-200"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75587.json"},{"type":"ADVISORY","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75587"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/desktop","events":[{"introduced":"0"},{"fixed":"99b6258eda51936ee4004a4e0175db06d65cc106"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"6.2.3"}],"source":"CPE_RANGE"}}],"versions":["v6.2.3-rc.2","v6.2.3-rc.1","v6.2.2-mas.1","v6.2.2","v6.2.2-rc.1","v6.2.1-mas.2","v6.2.1","v6.2.1-mas.1","v6.2.1-rc.1","v6.2.0-mas.1","v6.2.0","v6.2.0-rc.3","v6.2.0-rc.2","v6.2.0-rc.1","v4.7.0-beta2","beta2","4.7.0-beta","v1.3.0-rc2","v1.3.0","v1.3.0-rc1","v1.2.0","v1.1.1","v1.1.0","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.5.1","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75587.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N"}]}