{"action":"Upgrade github.com/mattermost/mattermost-server to 4.0.5+incompatible or later.","affected":[{"fixed":"4.0.5+incompatible","introduced":"0"},{"fixed":"4.1.1+incompatible","introduced":"4.1.0+incompatible"},{"fixed":"4.2.0+incompatible","introduced":"4.2.0-rc1+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18895"],"ecosystem":"Go","epss":0.00927,"exploited":false,"fixed_versions":["4.0.5+incompatible","4.1.1+incompatible","4.2.0+incompatible"],"ghsa_id":"GHSA-h742-xx59-r9pq","id":"tcs_01M5KGCXVFZQX6PF7Y2FE3T3FA","modified_at":"2026-03-03T04:57:51.680678Z","published_at":"2026-01-13T16:42:40Z","references":["https://osv.dev/vulnerability/GO-2026-4295","https://github.com/advisories/GHSA-h742-xx59-r9pq","https://nvd.nist.gov/vuln/detail/CVE-2017-18895","https://github.com/mattermost/mattermost/commit/3c34e2b2dcb0fde96a10e68d877aa7d0ab511669","https://github.com/mattermost/mattermost/commit/722fb1947a2e7395ccf16adce9206736d803a9f3","https://github.com/mattermost/mattermost/commit/d38328976e2c8bb0fab91e656042a0d8ac37bc76","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4295","url":"https://osv.dev/vulnerability/GO-2026-4295"}],"summary":"Mattermost Server exposes sensitive user status information via REST API version 4 endpoint in github.com/mattermost/mattermost-server"}