{"id":"CVE-2025-27715","aliases":["BIT-mattermost-2025-27715","EUVD-2025-7203","GHSA-cw7q-5cgc-h3h9","GO-2025-3555","openSUSE-SU-2025:14937-1"],"status":"published","title":"Auto-Enrollment of Team Admins into Private Channels without explicit consent","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","severity":{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00217,"percentile":0.12342,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2025-03-21T08:22:25Z","modified":"2026-10-28T02:30:35Z","fixes":[{"ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","fixed_in":["9.11.9"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"mattermost","fixed_in":["10.0.0"],"sources":["osv"]},{"ecosystem":"Go","package":"github.com/mattermost/mattermost-server","fixed_in":["9.11.9+incompatible"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.11.0"},{"fixed":"9.11.9"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"mattermost","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0"},{"fixed":"10.0.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0"},{"fixed":"9.11.9"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0+incompatible"},{"fixed":"9.11.9+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"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"govulncheck-vulndb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.20250327T184518-1.1"}]}],"bundled":30}],"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-2025-27715","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-cw7q-5cgc-h3h9","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27715.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/NEVFAGUWHTVZSJTUAIU6C4S26DP2KIGB/","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2024-25132","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-53348","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-53351","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-7598","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-7631","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-9042","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-9900","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1097","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1098","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1472","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1767","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-1974","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-24513","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-24514","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-24920","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-25068","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-25274","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27612","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27715","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27933","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-29778","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-29914","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-29922","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-29923","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30077","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30153","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30162","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30163","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30179","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-30204","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-27715","title":"Auto-Enrollment of Team Admins into Private Channels without explicit consent","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T08:22:25.321Z","modified":"2025-03-21T13:35:01.832Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:42.411662Z"}],"euvd":[{"id":"EUVD-2025-7203","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T08:22:25Z","modified":"2025-03-21T13:35:01Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T20:52:56.450224Z"}],"ghsa":[{"id":"GHSA-cw7q-5cgc-h3h9","title":"Mattermost fail to prompt for explicit approval before adding a team admin to a private channel","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T09:30:35Z","modified":"2025-03-21T22:38:11Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:38:36.51789Z"}],"nvd":[{"id":"CVE-2025-27715","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T09:15:13.1Z","modified":"2026-06-17T09:04:06.623Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:10:54.744127Z"}],"osv":[{"id":"CVE-2025-27715","title":"Auto-Enrollment of Team Admins into Private Channels without explicit consent","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T08:22:25.321Z","modified":"2026-10-28T02:30:35.538632737Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:44:47.708311Z"},{"id":"GHSA-cw7q-5cgc-h3h9","title":"Mattermost fail to prompt for explicit approval before adding a team admin to a private channel","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-21T09:30:35Z","modified":"2025-03-28T08:46:15.998314Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:45.639885Z"},{"id":"BIT-mattermost-2025-27715","description":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","status":"published","published":"2025-03-28T07:21:49.847Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"GO-2025-3555","title":"Mattermost fail to prompt for explicit approval before adding a team admin to a private channel in github.com/mattermost/mattermost-server","description":"Mattermost fail to prompt for explicit approval before adding a team admin to a private channel in github.com/mattermost/mattermost-server","status":"published","published":"2025-03-25T19:38:11Z","modified":"2026-03-03T04:56:25.97784Z","updated_at":"2026-11-02T15:47:01.728182Z"},{"id":"openSUSE-SU-2025:14937-1","title":"govulncheck-vulndb-0.0.20250327T184518-1.1 on GA media","description":"These are all security issues fixed in the govulncheck-vulndb-0.0.20250327T184518-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-03-28T00:00:00Z","modified":"2026-02-04T02:21:10.797539Z","updated_at":"2026-11-02T16:58:37.399567Z"}]}}
