{"action":"Upgrade github.com/mattermost/mattermost-server to 10.11.11+incompatible or later.","affected":[{"fixed":"10.11.11+incompatible","introduced":"10.11.0-rc1+incompatible"},{"fixed":"11.2.3+incompatible","introduced":"11.2.0-rc1+incompatible"},{"fixed":"11.3.2+incompatible","introduced":"11.3.0-rc1+incompatible"},{"fixed":"11.4.1+incompatible","introduced":"11.4.0-rc1+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-4274"],"ecosystem":"Go","epss":0.00143,"exploited":false,"fixed_versions":["10.11.11+incompatible","11.2.3+incompatible","11.3.2+incompatible","11.4.1+incompatible"],"ghsa_id":"GHSA-g7fp-cqj5-x8hf","id":"tcs_01M5KGKZ5TEDVH9WQG2Z3WS9CA","modified_at":"2026-06-25T19:45:37.546431655Z","published_at":"2026-06-25T18:43:19Z","references":["https://osv.dev/vulnerability/GO-2026-5393","https://github.com/advisories/GHSA-g7fp-cqj5-x8hf","https://nvd.nist.gov/vuln/detail/CVE-2026-4274","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GO-2026-5393","url":"https://osv.dev/vulnerability/GO-2026-5393"},{"source":"nvd","source_id":"CVE-2026-4274","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4274"}],"summary":"Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server"}