{"id":"CVE-2024-41926","aliases":["BIT-mattermost-2024-41926","EUVD-2024-2547","GHSA-9fpw-c9x7-cv3j","GO-2024-3022"],"status":"published","title":"Malicious remote can claim that a user was synced from another remote","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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 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Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-41926","tags":["web","advisory"]},{"url":"https://pkg.go.dev/vuln/GO-2024-3022","tags":["web"]},{"url":"https://github.com/mattermost/mattermost/commit/5114c3b7cdb84086959bf0ef8bc5afdaedf9fef6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9fpw-c9x7-cv3j","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41926.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-41926","title":"Malicious remote can claim that a user was synced from another remote","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T14:05:10.65Z","modified":"2024-08-01T14:32:10.107Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:04.00829Z"}],"euvd":[{"id":"EUVD-2024-2547","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T14:05:10Z","modified":"2024-08-01T14:32:10Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T03:50:48.911719Z"}],"ghsa":[{"id":"GHSA-9fpw-c9x7-cv3j","title":"Mattermost allows remote actor to set arbitrary RemoteId values for synced users","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T15:32:23Z","modified":"2025-07-09T16:41:23Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","level":"medium"},{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284","CWE-346"],"updated_at":"2026-11-02T14:38:49.837727Z"}],"nvd":[{"id":"CVE-2024-41926","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T15:15:13.9Z","modified":"2026-06-17T07:48:27.793Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284","CWE-346"],"updated_at":"2026-11-02T14:10:15.933769Z"}],"osv":[{"id":"CVE-2024-41926","title":"Malicious remote can claim that a user was synced from another remote","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T14:05:10.65Z","modified":"2026-10-28T02:31:14.936845459Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:41.963899Z"},{"id":"GHSA-9fpw-c9x7-cv3j","title":"Mattermost allows remote actor to set arbitrary RemoteId values for synced users","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-08-01T15:32:23Z","modified":"2025-07-09T16:41:20Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"},{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","level":"medium"}],"cwes":["CWE-284","CWE-346"],"updated_at":"2026-11-02T15:46:43.524801Z"},{"id":"BIT-mattermost-2024-41926","description":"Mattermost versions 9.9.x \u003c= 9.9.0 and 9.5.x \u003c= 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.","status":"published","published":"2024-09-05T19:13:59.836Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"GO-2024-3022","title":"Mattermost allows remote actor to set arbitrary RemoteId values for synced users in github.com/mattermost/mattermost-server","description":"Mattermost allows remote actor to set arbitrary RemoteId values for synced users in github.com/mattermost/mattermost-server","status":"published","published":"2024-08-06T22:40:50Z","modified":"2026-03-03T04:51:56.67874Z","updated_at":"2026-11-02T15:47:01.453823Z"}]}}