{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server/v6","cve_ids":["CVE-2026-3433"],"ecosystem":"Go","epss":0.0018,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-rp4v-qc77-phm4","id":"tcs_01M5KGSZKPSNH4C3PXJ0MRFVY2","modified_at":"2026-08-26T01:19:16.500798261Z","published_at":"2026-08-25T19:43:10Z","references":["https://osv.dev/vulnerability/GO-2026-6286","https://github.com/advisories/GHSA-rp4v-qc77-phm4","https://nvd.nist.gov/vuln/detail/CVE-2026-3433","https://github.com/mattermost/mattermost/commit/0a0ab0d54d899d308bd1352cc577036917500318","https://github.com/mattermost/mattermost/commit/7425c6817bf244f976c729f8a73cecac8039a1e1","https://github.com/mattermost/mattermost/commit/9408b98025d7364d7dfe7cdb28fcd109b1b595a6","https://github.com/mattermost/mattermost/commit/a30a331a29b9766d46716d4252056d7b74e66da0","https://github.com/mattermost/mattermost/pull/35497","https://github.com/mattermost/mattermost/pull/36256","https://github.com/mattermost/mattermost/pull/36257","https://github.com/mattermost/mattermost/pull/36341","https://github.com/mattermost/mattermost/releases/tag/v10.11.16","https://github.com/mattermost/mattermost/releases/tag/v11.5.5","https://github.com/mattermost/mattermost/releases/tag/v11.6.2","https://github.com/mattermost/mattermost/releases/tag/v11.7.0","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-6286#Go/github.com/mattermost/mattermost-server/v6","url":"https://osv.dev/vulnerability/GO-2026-6286"}],"summary":"Mattermost doesn't restrict role_updated websocket event broadcasts to members of the affected team or channel in github.com/mattermost/mattermost-server"}