{"id":"GHSA-gvg4-jhmr-6j23","revision":"03168986a063400c9bb71e702777b07a","records":[{"revision":"03168986a063400c9bb71e702777b07a","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-gvg4-jhmr-6j23","aliases":["CVE-2026-4286","GO-2026-5404"],"title":"Mattermost doesn't check if {{team_id}} was being changed when updating playbooks","description":"Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to check if {{team_id}} was being changed when updating playbooks, allowing users with only {{Manage Playbook Configurations}} permission to change a playbook's team, bypassing manage members restriction via PUT api. Mattermost Advisory ID: MMSA-2025-00552","state":0,"publishedAt":"2026-05-18T09:31:48+00:00","modifiedAt":"2026-06-25T23:11:03.5394824+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"11.5.0"},{"kind":"fixed","version":"11.5.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.11.0"},{"kind":"fixed","version":"10.11.14"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-playbooks","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.41.1-0.20260213020129-e1d6ec2c94e6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-4286","https://github.com/mattermost/mattermost-plugin-playbooks/commit/e1d6ec2c94e695fb74e0c0c11c0d45e028bb96f3","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"sourceUrl":"https://github.com/advisories/GHSA-gvg4-jhmr-6j23","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-gvg4-jhmr-6j23","identifiers":["GHSA-gvg4-jhmr-6j23","CVE-2026-4286","GO-2026-5404"]},"retained":false,"historicalAffected":[]}],"coverage":[]}