{"id":"CVE-2025-13821","summary":"User profile update exposes password hash and MFA secrets","details":"Mattermost versions 11.1.x \u003c= 11.1.2, 10.11.x \u003c= 10.11.9, 11.2.x \u003c= 11.2.1 fail to sanitize sensitive data in WebSocket messages which allows authenticated users to exfiltrate password hashes and MFA secrets via profile nickname updates or email verification events. Mattermost Advisory ID: MMSA-2025-00560","aliases":["GHSA-pp9j-pf5c-659x","GO-2026-4524"],"modified":"2026-05-18T05:56:13.763415785Z","published":"2026-02-16T11:57:25.588Z","related":["SUSE-SU-2026:0757-1"],"database_specific":{"cwe_ids":["CWE-200"],"cna_assigner":"Mattermost","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"11.1.0"},{"last_affected":"11.1.2"},{"introduced":"10.11.0"},{"last_affected":"10.11.9"},{"introduced":"11.2.0"},{"last_affected":"11.2.1"}]}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13821.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13821.json"},{"type":"ADVISORY","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-13821"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"5b955468ea1ea8b56c0fb10feb258a36a767d7bb"},{"fixed":"ba27ba1f8cb1ffe2b1a79dc3d15a3ffa7de12fd7"},{"introduced":"e62f350cd7a896c45a0e025f44cb8915f5597854"},{"fixed":"7d0e4261dd4bc45162be3183ac19241f43a3f994"},{"introduced":"ab7b138824c61fe1fe815243d7e2a914dec49c8b"},{"fixed":"cfbe9d9254d4903777fab5957924d260cb5b74ff"}],"database_specific":{"source":"CPE_FIELD","extracted_events":[{"introduced":"10.11.0"},{"fixed":"10.11.10"},{"introduced":"11.1.0"},{"fixed":"11.1.3"},{"introduced":"11.2.0"},{"fixed":"11.2.2"}],"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*"}}],"versions":["v11.1.2-rc1","v11.1.2","v10.11.9","v11.2.1","v11.2.1-rc1","v11.2.0","v10.11.9-rc1","v10.11.8","v11.1.1","v11.1.1-rc2","v11.1.1-rc1","v10.11.7","v11.1.0-rc4","v11.1.0","mattermost-redux@11.1.0","@mattermost/types@11.1.0","@mattermost/client@11.1.0","v10.11.6","v10.11.5","v10.11.4-rc3","v10.11.4","v10.11.4-rc2","v10.11.4-rc1","v10.11.3","v10.11.2-rc2","v10.11.2","v10.11.2-rc1","v10.11.1","v10.11.1-rc1","v10.11.0-rc3","v10.11.0","mattermost-redux@10.11.0","@mattermost/types@10.11.0","@mattermost/client@10.11.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-13821.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"}]}