{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260217110922-b7d4a1f1f59b or later.","affected":[{"fixed":"11.4.1","introduced":"11.4.0"},{"fixed":"11.3.2","introduced":"11.3.0"},{"fixed":"11.2.4","introduced":"11.2.0"},{"fixed":"10.11.12","introduced":"10.11.0"},{"fixed":"8.0.0-20260217110922-b7d4a1f1f59b","introduced":"8.0.0-20260105080200-d27a2195068d"}],"component":"github.com/mattermost/mattermost/server/v8","cve_ids":["CVE-2026-3114"],"ecosystem":"Go","epss":0.00356,"exploited":false,"fixed_versions":["11.4.1","11.3.2","11.2.4","10.11.12","8.0.0-20260217110922-b7d4a1f1f59b"],"ghsa_id":"GHSA-vhgh-g7x8-4rx8","id":"tcs_01M5KFP6YDRK1YW85BHTG6JZW1","modified_at":"2026-06-25T23:11:07.227837593Z","published_at":"2026-03-26T18:31:42Z","references":["https://osv.dev/vulnerability/GHSA-vhgh-g7x8-4rx8","https://nvd.nist.gov/vuln/detail/CVE-2026-3114","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-vhgh-g7x8-4rx8","url":"https://osv.dev/vulnerability/GHSA-vhgh-g7x8-4rx8"}],"summary":"Mattermost doesn't validate decompressed archive entry sizes during file extraction"}