{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 9.5.7 or later.","affected":[{"fixed":"9.5.7","introduced":"9.5.0"},{"fixed":"9.7.6","introduced":"9.7.0"},{"fixed":"9.8.2","introduced":"9.8.0"},{"fixed":"9.9.1","introduced":"9.9.0"}],"component":"github.com/mattermost/mattermost/server/v8","cve_ids":["CVE-2024-39839"],"ecosystem":"Go","epss":0.00338,"exploited":false,"fixed_versions":["9.5.7","9.7.6","9.8.2","9.9.1"],"ghsa_id":"GHSA-vg6q-84p8-qvqh","id":"tcs_01M5KFP3VRSH24T58H9MWHX0CH","modified_at":"2024-09-05T20:11:49.600165Z","published_at":"2024-08-01T15:32:23Z","references":["https://osv.dev/vulnerability/GHSA-vg6q-84p8-qvqh","https://nvd.nist.gov/vuln/detail/CVE-2024-39839","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates","https://pkg.go.dev/vuln/GO-2024-3024"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-vg6q-84p8-qvqh","url":"https://osv.dev/vulnerability/GHSA-vg6q-84p8-qvqh"}],"summary":"Mattermost allows a user on a remote to set their remote username prop to an arbitrary string"}