{"id":"CVE-2025-3446","aliases":["EUVD-2025-15149","GHSA-r7r2-m3vr-c8qc","GO-2025-3693","openSUSE-SU-2025:15159-1"],"status":"published","title":"Members Without Guest Invite Permissions Can Add Guests to Teams","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","severity":{"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":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00255,"percentile":0.17222,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2025-05-15T10:43:46Z","modified":"2026-10-28T02:30:25Z","fixes":[{"ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","fixed_in":["10.6.2","10.5.3","10.4.5","9.11.12","8.0.0-20250415054241-76ab3867b785"],"sources":["ghsa","osv"]},{"ecosystem":"Go","package":"github.com/mattermost/mattermost-server","fixed_in":["9.11.12+incompatible","10.4.5+incompatible","10.5.3+incompatible","10.6.2+incompatible"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.6.0"},{"last_affected":"10.6.1"},{"fixed":"10.6.2"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.5.0"},{"last_affected":"10.5.2"},{"fixed":"10.5.3"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.4.0"},{"last_affected":"10.4.4"},{"fixed":"10.4.5"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.11.0"},{"last_affected":"9.11.11"},{"fixed":"9.11.12"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.0-20250415054241-76ab3867b785"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"10.6.0"},{"fixed":"10.6.2"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"10.5.0"},{"fixed":"10.5.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"10.4.0"},{"fixed":"10.4.5"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0"},{"fixed":"9.11.12"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.0.0-20250415054241-76ab3867b785"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0+incompatible"},{"fixed":"9.11.12+incompatible"},{"introduced":"10.4.0+incompatible"},{"fixed":"10.4.5+incompatible"},{"introduced":"10.5.0+incompatible"},{"fixed":"10.5.3+incompatible"},{"introduced":"10.6.0+incompatible"},{"fixed":"10.6.2+incompatible"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server/v5","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server/v6","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.0.0-20250415054241-76ab3867b785"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"govulncheck-vulndb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.20250523T151856-1.1"}]}],"bundled":14}],"products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3446","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r7r2-m3vr-c8qc","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3446.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/NBVOKYMJCE2HZLSF5W3H3Q7KEHMMOQR3/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2024-40120","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1975","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-2527","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-2570","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-31947","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3446","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47282","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47283","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47284","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47290","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47291","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48056","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48069","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-5031","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-3446","title":"Members Without Guest Invite Permissions Can Add Guests to Teams","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T10:43:46.639Z","modified":"2025-05-15T13:41:54.267Z","cvss":[{"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":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:39.378527Z"}],"euvd":[{"id":"EUVD-2025-15149","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T10:43:46Z","modified":"2025-05-15T13:41:54Z","cvss":[{"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"}],"updated_at":"2026-11-02T20:32:47.046718Z"}],"ghsa":[{"id":"GHSA-r7r2-m3vr-c8qc","title":"Mattermost Fails to Validate Team Invite Permissions","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T12:30:27Z","modified":"2025-05-17T14:02:06Z","cvss":[{"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"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:38:43.998596Z"}],"nvd":[{"id":"CVE-2025-3446","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T11:15:48.777Z","modified":"2026-06-17T09:19:58.253Z","cvss":[{"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":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:11:08.321805Z"}],"osv":[{"id":"CVE-2025-3446","title":"Members Without Guest Invite Permissions Can Add Guests to Teams","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T10:43:46.639Z","modified":"2026-10-28T02:30:25.172458622Z","cvss":[{"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"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:44:48.02508Z"},{"id":"GHSA-r7r2-m3vr-c8qc","title":"Mattermost Fails to Validate Team Invite Permissions","description":"Mattermost versions 10.6.x \u003c= 10.6.1, 10.5.x \u003c= 10.5.2, 10.4.x \u003c= 10.4.4, 9.11.x \u003c= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.","status":"published","published":"2025-05-15T12:30:27Z","modified":"2025-05-23T16:13:07.059172Z","cvss":[{"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"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:55.480549Z"},{"id":"GO-2025-3693","title":"Mattermost Fails to Validate Team Invite Permissions in github.com/mattermost/mattermost-server","description":"Mattermost Fails to Validate Team Invite Permissions in github.com/mattermost/mattermost-server","status":"published","published":"2025-05-23T15:17:19Z","modified":"2026-03-03T04:56:35.731417Z","updated_at":"2026-11-02T15:47:01.728182Z"},{"id":"openSUSE-SU-2025:15159-1","title":"govulncheck-vulndb-0.0.20250523T151856-1.1 on GA media","description":"These are all security issues fixed in the govulncheck-vulndb-0.0.20250523T151856-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-05-26T00:00:00Z","modified":"2026-03-23T04:53:25.486565Z","updated_at":"2026-11-02T16:58:37.399567Z"}]}}
