{"id":"CVE-2026-75587","aliases":["EUVD-2026-60543","GHSA-jq35-5w25-hqv7"],"status":"published","title":"Plaintext pre-auth secret exposure via Desktop App diagnostics report","description":"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","severity":{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00133,"percentile":0.02853,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2026-08-17T22:09:49Z","modified":"2026-10-28T02:30:27Z","products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_desktop"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75587","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jq35-5w25-hqv7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75587.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-75587","title":"Plaintext pre-auth secret exposure via Desktop App diagnostics report","description":"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","status":"published","published":"2026-08-17T22:09:49.59Z","modified":"2026-08-18T14:20:26.801Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:20:07.260654Z"}],"euvd":[{"id":"EUVD-2026-60543","description":"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","status":"published","published":"2026-08-17T22:09:49Z","modified":"2026-08-18T14:20:26Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T18:01:46.762528Z"}],"ghsa":[{"id":"GHSA-jq35-5w25-hqv7","title":"Mattermost Desktop App versions \u003c=6.2 6.2.2.0 fail to redact the pre-auth secret when generating...","description":"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","status":"published","published":"2026-08-18T00:30:36Z","modified":"2026-08-18T00:30:43Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:10:35.792698Z"}],"nvd":[{"id":"CVE-2026-75587","description":"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","status":"published","published":"2026-08-17T23:16:52.82Z","modified":"2026-08-19T15:53:15.973Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:12:38.647684Z"}],"osv":[{"id":"CVE-2026-75587","title":"Plaintext pre-auth secret exposure via Desktop App diagnostics report","description":"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","status":"published","published":"2026-08-17T22:09:49.59Z","modified":"2026-10-28T02:30:27.636357642Z","cvss":[{"version":"3.1","score":3.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:45:17.102988Z"}]}}