{"cve":"CVE-2025-3227","nvd":{"published":"2025-06-20T15:15:20.430","modified":"2026-06-17T09:19:28.223","status":"Analyzed","description":"Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-863"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2025-3227","score":0.00246,"percentile":0.15957,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qwwm-c582-82rx","url":"https://osv.dev/vulnerability/GHSA-qwwm-c582-82rx","summary":"Mattermost allows unauthorized channel member management through playbook runs","modified":"2025-07-28T20:42:05.140259Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":["<0.0.0-20250520060012-d0380305ef7a"],"fixed":["0.0.0-20250520060012-d0380305ef7a"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":["<8.0.0-20250520060012-d0380305ef7a"],"fixed":["8.0.0-20250520060012-d0380305ef7a"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":[">=10.5.0 <10.5.6"],"fixed":["10.5.6"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":[">=9.11.0 <9.11.16"],"fixed":["9.11.16"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":[">=10.8.0 <10.8.1"],"fixed":["10.8.1"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":[">=10.7.0 <10.7.3"],"fixed":["10.7.3"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":[">=10.6.0 <10.6.6"],"fixed":["10.6.6"]}]},{"id":"GO-2025-3772","url":"https://osv.dev/vulnerability/GO-2025-3772","summary":"Mattermost allows unauthorized channel member management through playbook runs in github.com/mattermost/mattermost-server","modified":"2026-03-03T04:56:41.644912Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":["<0.0.0-20250520060012-d0380305ef7a",">=9.11.0+incompatible <9.11.16+incompatible",">=10.5.0+incompatible <10.5.6+incompatible",">=10.6.0+incompatible <10.6.6+incompatible",">=10.7.0+incompatible <10.7.3+incompatible",">=10.8.0+incompatible <10.8.1+incompatible"],"fixed":["0.0.0-20250520060012-d0380305ef7a","9.11.16+incompatible","10.5.6+incompatible","10.6.6+incompatible","10.7.3+incompatible","10.8.1+incompatible"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v5","purl":"pkg:golang/github.com/mattermost/mattermost-server/v5","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","ranges":["<8.0.0-20250520060012-d0380305ef7a"],"fixed":["8.0.0-20250520060012-d0380305ef7a"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}