{"action":"Upgrade github.com/mattermost/mattermost-server to 10.11.12+incompatible or later.","affected":[{"fixed":"10.11.12+incompatible","introduced":"10.11.0+incompatible"},{"fixed":"11.2.4+incompatible","introduced":"11.2.0+incompatible"},{"fixed":"11.3.2+incompatible","introduced":"11.3.0+incompatible"},{"fixed":"11.4.1+incompatible","introduced":"11.4.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-3114"],"ecosystem":"Go","epss":0.00356,"exploited":false,"fixed_versions":["10.11.12+incompatible","11.2.4+incompatible","11.3.2+incompatible","11.4.1+incompatible"],"ghsa_id":"GHSA-vhgh-g7x8-4rx8","id":"tcs_01M5KGNZWJNJCN25K6V5G7ZMAR","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","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"}