{"action":"Upgrade github.com/mattermost/mattermost-server to 3.9.1-rc1+incompatible or later.","affected":[{"fixed":"3.9.1-rc1+incompatible","introduced":"0"},{"fixed":"3.10.1+incompatible","introduced":"3.10.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18908"],"ecosystem":"Go","epss":0.01184,"exploited":false,"fixed_versions":["3.9.1-rc1+incompatible","3.10.1+incompatible"],"ghsa_id":"GHSA-34cx-hvm4-vx7j","id":"tcs_01M5KGDYRTNMJS76JNTR5QFJGY","modified_at":"2026-02-19T20:41:06.521478Z","published_at":"2026-02-17T18:09:06Z","references":["https://osv.dev/vulnerability/GO-2026-4476","https://github.com/advisories/GHSA-34cx-hvm4-vx7j","https://nvd.nist.gov/vuln/detail/CVE-2017-18908","https://github.com/mattermost/mattermost/commit/59139390ae927af2e879dbacfe4dadb1adac97c0","https://github.com/mattermost/mattermost/commit/d3bc11be3acd3a73e6358d958b91427e2584ea71","https://github.com/mattermost/mattermost/commit/e5065cf7575ee05c040945a4b00b7fd90bf39b83","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4476","url":"https://osv.dev/vulnerability/GO-2026-4476"}],"summary":"Mattermost Server password reset email requests can be sent to attacker-provided email addresses in github.com/mattermost/mattermost-server"}