{"action":"Upgrade github.com/mattermost/mattermost-server to 4.1.2 or later.","affected":[{"fixed":"4.1.2","introduced":"0"},{"fixed":"4.2.1","introduced":"4.2.0-rc1"},{"fixed":"4.3.0","introduced":"4.3.0-rc1"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18885"],"ecosystem":"Go","epss":0.01184,"exploited":false,"fixed_versions":["4.1.2","4.2.1","4.3.0"],"ghsa_id":"GHSA-g78f-6xq7-rrhq","id":"tcs_01M5KFAH5NM4M3ZDEVCDW8C3VN","modified_at":"2026-01-06T23:41:17.979183Z","published_at":"2022-05-24T17:21:04Z","references":["https://osv.dev/vulnerability/GHSA-g78f-6xq7-rrhq","https://nvd.nist.gov/vuln/detail/CVE-2017-18885","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-g78f-6xq7-rrhq","url":"https://osv.dev/vulnerability/GHSA-g78f-6xq7-rrhq"}],"summary":"Mattermost Server allows attackers to gain privileges by accessing unintended API endpoints with users' credentials"}