{"id":"GHSA-p6gj-jc38-x2m7","summary":"Mattermost fails to validate user permissions when deleting comments in Boards","details":"Mattermost versions 11.0.x \u003c= 11.0.2, 10.12.x \u003c= 10.12.1, 10.11.x \u003c= 10.11.4, 10.5.x \u003c= 10.5.12 fail to validate user permissions when deleting comments in Boards, which allows an authenticated user with the editor role to delete comments created by other users.","aliases":["CVE-2025-12756","GO-2025-4172"],"modified":"2025-12-03T19:43:25.608785Z","published":"2025-12-01T21:30:26Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-12-02T16:53:35Z","nvd_published_at":"2025-12-01T20:15:49Z","cwe_ids":["CWE-863"],"severity":"MODERATE"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-12756"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"8.0.0-20251013062617-7977e7e6dae3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-p6gj-jc38-x2m7/GHSA-p6gj-jc38-x2m7.json"}},{"package":{"name":"github.com/mattermost/mattermost","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.11.0"},{"last_affected":"10.11.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-p6gj-jc38-x2m7/GHSA-p6gj-jc38-x2m7.json"}},{"package":{"name":"github.com/mattermost/mattermost","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.12.0"},{"last_affected":"10.12.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-p6gj-jc38-x2m7/GHSA-p6gj-jc38-x2m7.json"}},{"package":{"name":"github.com/mattermost/mattermost","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.5.0"},{"last_affected":"10.5.12"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-p6gj-jc38-x2m7/GHSA-p6gj-jc38-x2m7.json"}},{"package":{"name":"github.com/mattermost/mattermost","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"11.0.0"},{"last_affected":"11.0.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-p6gj-jc38-x2m7/GHSA-p6gj-jc38-x2m7.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}