{"id":"GHSA-m79q-8qf5-v622","revision":"6522b29fcfd84501a4da4a4b2ed086c2","records":[{"revision":"6522b29fcfd84501a4da4a4b2ed086c2","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-m79q-8qf5-v622","aliases":["CVE-2026-6343","GO-2026-5494"],"title":"Mattermost doesn't check public/private permissions","description":"Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get.. Mattermost Advisory ID: MMSA-2026-00591","state":0,"publishedAt":"2026-05-18T09:31:48+00:00","modifiedAt":"2026-06-25T23:11:41.4561549+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":"11.4.0"},{"kind":"fixed","version":"11.4.4"}]}],"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":"1.41.1-0.20260309184833-887d9cacb616"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-6343","https://github.com/mattermost/mattermost-plugin-playbooks/commit/887d9cacb61655d40f20ad9d6e35b408a127c380","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"sourceUrl":"https://github.com/advisories/GHSA-m79q-8qf5-v622","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-m79q-8qf5-v622","identifiers":["GHSA-m79q-8qf5-v622","CVE-2026-6343","GO-2026-5494"]},"retained":false,"historicalAffected":[]}],"coverage":[]}