{"action":"Upgrade github.com/mattermost/mattermost-server to 10.11.14+incompatible or later.","affected":[{"fixed":"10.11.14+incompatible","introduced":"10.11.0+incompatible"},{"fixed":"11.4.4+incompatible","introduced":"11.4.0+incompatible"},{"fixed":"11.5.2+incompatible","introduced":"11.5.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-28732"],"ecosystem":"Go","epss":0.00254,"exploited":false,"fixed_versions":["10.11.14+incompatible","11.4.4+incompatible","11.5.2+incompatible"],"ghsa_id":"GHSA-wvcv-9xpm-7mqc","id":"tcs_01M5KGPCVKS5923PQMSCN5P4JX","modified_at":"2026-06-25T23:01:40.053823954Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5726","https://github.com/advisories/GHSA-wvcv-9xpm-7mqc","https://nvd.nist.gov/vuln/detail/CVE-2026-28732","https://github.com/mattermost/mattermost/commit/f5fe8ded6b633db7804ae25b42ea12ce635d6ea6","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-5726","url":"https://osv.dev/vulnerability/GO-2026-5726"}],"summary":"Mattermost doesn't enforce slash command trigger-word uniqueness during command updates in github.com/mattermost/mattermost-server"}