{"id":"CVE-2026-28741","summary":"CSRF Protection Bypass Allows Updating a User's Authentication Method","details":"Mattermost versions 10.11.x \u003c= 10.11.12, 11.5.x \u003c= 11.5.0, 11.4.x \u003c= 11.4.2, 11.3.x \u003c= 11.3.2 fail to validate CSRF tokens on an authentication endpoint which allows an attacker to update a user's authentication method via a CSRF attack by tricking a user into visiting a malicious page. Mattermost Advisory ID: MMSA-2026-00625","aliases":["GHSA-m7cf-4gh2-v4qg","GO-2026-5495"],"modified":"2026-07-08T08:12:26.108810621Z","published":"2026-04-15T10:13:33.950Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28741.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"10.11.0"},{"last_affected":"10.11.12"},{"introduced":"11.5.0"},{"last_affected":"11.5.0"},{"introduced":"11.4.0"},{"last_affected":"11.4.2"},{"introduced":"11.3.0"},{"last_affected":"11.3.2"}]}],"cwe_ids":["CWE-352"],"cna_assigner":"Mattermost"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28741.json"},{"type":"ADVISORY","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28741"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"5b955468ea1ea8b56c0fb10feb258a36a767d7bb"},{"fixed":"bc1a2b34b1f96d48465ff662f9b4751db1c900de"},{"introduced":"d27a2195068ddfa3ce17cf470f9739e4edb94b83"},{"fixed":"e808e22f49be6bf0a48307e2b3115830b7126a12"},{"introduced":"2a1ac98bd3fae587927adf9340ba266c8c02018e"},{"fixed":"f03fea5167ae4d4019a7d6d5c53030fd969e7eb1"},{"introduced":"9f2616376582893035a7e3cb38b0fab648bba4e8"},{"fixed":"c2d85727d25e63f1647aa3378d0dca2a22216b30"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","source":"CPE_RANGE","extracted_events":[{"introduced":"10.11.0"},{"fixed":"10.11.13"},{"introduced":"11.3.0"},{"fixed":"11.3.3"},{"introduced":"11.4.0"},{"fixed":"11.4.3"},{"introduced":"11.5.0"},{"fixed":"11.5.1"}]}}],"versions":["v11.5.0","v10.11.13-rc1","v11.4.2","v11.3.2-rc1","v11.3.2","v10.11.12","v11.4.1-rc2","v11.4.1-rc1","v11.4.1","v11.3.1","v10.11.11-rc2","v10.11.11","v11.4.0-rc3","v11.4.0","mattermost-redux@11.4.0","@mattermost/types@11.4.0","@mattermost/client@11.4.0","v10.11.11-rc1","v11.3.1-rc1","v10.11.10","v11.3.0-rc4","v11.3.0-rc3","v11.3.0","mattermost-redux@11.3.0","@mattermost/types@11.3.0","@mattermost/client@11.3.0","v10.11.9","v10.11.9-rc1","v10.11.8","v10.11.7","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/cve-osv-conversion/osv-output/CVE-2026-28741.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"}]}