{"id":"CVE-2025-4128","aliases":["EUVD-2025-18094","GHSA-jwhw-xf5v-qgxc","GO-2025-3757","openSUSE-SU-2025:15225-1"],"status":"published","title":"Mattermost Guest User Information Disclosure Vulnerability","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00231,"percentile":0.141,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2025-06-11T10:25:04Z","modified":"2026-10-28T02:30:40Z","fixes":[{"ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","fixed_in":["8.0.0-20250422131222-701ddc896a10"],"sources":["ghsa","osv"]},{"ecosystem":"Go","package":"github.com/mattermost/mattermost-server","fixed_in":["10.5.5","9.11.14","9.11.14+incompatible","10.5.5+incompatible"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.0-20250422131222-701ddc896a10"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.5.0"},{"fixed":"10.5.5"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.11.0"},{"fixed":"9.11.14"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.0.0-20250422131222-701ddc896a10"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"10.5.0"},{"fixed":"10.5.5"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0"},{"fixed":"9.11.14"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0+incompatible"},{"fixed":"9.11.14+incompatible"},{"introduced":"10.5.0+incompatible"},{"fixed":"10.5.5+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":"8.0.0-20250422131222-701ddc896a10"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"govulncheck-vulndb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.20250612T141001-1.1"}]}],"bundled":29}],"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-2025-4128","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost/commit/2138a5f2ca6f75e2b99f6a04ea569d0f680c4fab","tags":["web"]},{"url":"https://github.com/mattermost/mattermost/commit/701ddc896a107b13f457fbdbe229bce5019fc516","tags":["web"]},{"url":"https://github.com/advisories/GHSA-jwhw-xf5v-qgxc","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4128.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2020-36846","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-31022","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-42818","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-0913","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1792","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-22874","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-25207","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-25208","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-2571","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-29785","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3230","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3260","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3454","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3611","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-3913","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-4128","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-4573","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-4673","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-47950","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48494","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48495","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48710","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48865","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48938","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48948","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-48949","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-49011","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-49136","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-49140","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-4128","title":"Mattermost Guest User Information Disclosure Vulnerability","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T10:25:04.917Z","modified":"2025-06-11T13:12:40.338Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:48.512547Z"}],"euvd":[{"id":"EUVD-2025-18094","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T10:25:04Z","modified":"2025-06-11T13:12:40Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T20:32:26.351797Z"}],"ghsa":[{"id":"GHSA-jwhw-xf5v-qgxc","title":"Mattermost allows guest users to view information about public teams they are not members of","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T12:30:36Z","modified":"2025-06-11T15:44:40Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:38:46.901955Z"}],"nvd":[{"id":"CVE-2025-4128","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T11:15:23.143Z","modified":"2026-06-17T09:32:33.813Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/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:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:11:11.789448Z"}],"osv":[{"id":"CVE-2025-4128","title":"Mattermost Guest User Information Disclosure Vulnerability","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T10:25:04.917Z","modified":"2026-10-28T02:30:40.326023394Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:44:49.394967Z"},{"id":"GHSA-jwhw-xf5v-qgxc","title":"Mattermost allows guest users to view information about public teams they are not members of","description":"Mattermost versions 10.5.x \u003c= 10.5.4, 9.11.x \u003c= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.","status":"published","published":"2025-06-11T12:30:36Z","modified":"2025-06-11T18:27:33.544415Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:51.10002Z"},{"id":"GO-2025-3757","title":"Mattermost allows guest users to view information about public teams they are not members of in github.com/mattermost/mattermost-server","description":"Mattermost allows guest users to view information about public teams they are not members of in github.com/mattermost/mattermost-server","status":"published","published":"2025-06-11T17:45:49Z","modified":"2026-03-03T04:56:41.328083Z","updated_at":"2026-11-02T15:47:01.728182Z"},{"id":"openSUSE-SU-2025:15225-1","title":"govulncheck-vulndb-0.0.20250612T141001-1.1 on GA media","description":"These are all security issues fixed in the govulncheck-vulndb-0.0.20250612T141001-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-07-03T00:00:00Z","modified":"2026-03-23T04:53:30.823164Z","updated_at":"2026-11-02T16:58:37.399567Z"}]}}