{"id":"CVE-2024-41926","aliases":["BIT-mattermost-2024-41926","GHSA-9fpw-c9x7-cv3j","GO-2024-3022"],"url":"https://o3.security/vulnerability/CVE-2024-41926","summary":"Malicious remote can claim that a user was synced from another remote","details":"Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.","published":"2024-08-01T14:05:10.650Z","modified":"2026-08-12T03:51:11.731566926Z","cvss":{"score":2.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"9.5.7"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"9.9.1"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"8.0.0-20240604093018-5114c3b7cdb8"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost","fixedVersion":"5.3.2-0.20240604093018-5114c3b7cdb8"}],"fix":{"url":"https://github.com/mattermost/mattermost/commit/5114c3b7cdb84086959bf0ef8bc5afdaedf9fef6","label":"mattermost/mattermost@5114c3b"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41926.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-41926"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/5114c3b7cdb84086959bf0ef8bc5afdaedf9fef6"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2024-3022"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:11.731566926Z"}}