{"action":"Upgrade github.com/mattermost/mattermost-server to 9.5.7+incompatible or later.","affected":[{"fixed":"9.5.7+incompatible","introduced":"9.5.0+incompatible"},{"fixed":"9.7.6+incompatible","introduced":"9.7.0+incompatible"},{"fixed":"9.8.2+incompatible","introduced":"9.8.0+incompatible"},{"fixed":"9.9.1+incompatible","introduced":"9.9.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2024-39839"],"ecosystem":"Go","epss":0.00338,"exploited":false,"fixed_versions":["9.5.7+incompatible","9.7.6+incompatible","9.8.2+incompatible","9.9.1+incompatible"],"ghsa_id":"GHSA-vg6q-84p8-qvqh","id":"tcs_01M5KG4HJWRNJ5HGZZC3ZE2FR9","modified_at":"2026-03-03T04:55:36.197508Z","published_at":"2024-08-06T22:40:50Z","references":["https://osv.dev/vulnerability/GO-2024-3024","https://github.com/advisories/GHSA-vg6q-84p8-qvqh","https://nvd.nist.gov/vuln/detail/CVE-2024-39839","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2024-3024","url":"https://osv.dev/vulnerability/GO-2024-3024"}],"summary":"Mattermost allows a user on a remote to set their remote username prop to an arbitrary string in github.com/mattermost/mattermost-server"}