{"schema_version":"1.7.5","id":"GHSA-hf8w-x9h5-5gf9","published":"2026-03-16T15:30:43Z","modified":"2026-03-23T18:55:57.843727Z","aliases":["CVE-2026-2461","GO-2026-4782"],"summary":"Mattermost Boards Plugin fails to implement authorisation checks on comment block modifications","details":"Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members.  Mattermost Advisory ID: MMSA-2025-00559","affected":[{"package":{"name":"github.com/mattermost/mattermost-plugin-boards","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-boards"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20260108044135-57c5be5b6ef5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-hf8w-x9h5-5gf9/GHSA-hf8w-x9h5-5gf9.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2461"},{"type":"WEB","url":"https://github.com/mattermost/mattermost-plugin-boards/commit/57c5be5b6ef59d02dd72e35094d1fae8ba6e9619"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost-plugin-boards"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-639"],"github_reviewed":true,"github_reviewed_at":"2026-03-19T17:49:20Z","nvd_published_at":"2026-03-16T14:19:29Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}