{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260217110922-b7d4a1f1f59b or later.","affected":[{"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":["8.0.0-20260217110922-b7d4a1f1f59b"],"ghsa_id":"GHSA-vhgh-g7x8-4rx8","id":"tcs_01M5KGP0B7B6GSTYANFBQFAAQ8","modified_at":"2026-06-25T23:01:25.632521089Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5663","https://github.com/advisories/GHSA-vhgh-g7x8-4rx8","https://nvd.nist.gov/vuln/detail/CVE-2026-3114","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GO-2026-5663#Go/github.com/mattermost/mattermost/server/v8","url":"https://osv.dev/vulnerability/GO-2026-5663"},{"source":"nvd","source_id":"CVE-2026-3114","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3114"}],"summary":"Mattermost doesn't validate decompressed archive entry sizes during file extraction in github.com/mattermost/mattermost-server"}