{"action":"Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260127062706-c6b205f0d770 or later.","affected":[{"fixed":"5.3.2-0.20260127062706-c6b205f0d770","introduced":"0"},{"fixed":"10.11.11","introduced":"10.11.0-rc1"},{"fixed":"11.2.3","introduced":"11.2.0-rc1"},{"fixed":"11.3.1","introduced":"11.3.0-rc1"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-2578"],"ecosystem":"Go","epss":0.00233,"exploited":false,"fixed_versions":["5.3.2-0.20260127062706-c6b205f0d770","10.11.11","11.2.3","11.3.1"],"ghsa_id":"GHSA-3rhr-jr63-hwq5","id":"tcs_01M5KEVAA7TRW05HHQKDD9S9P4","modified_at":"2026-03-23T18:56:01.583567Z","published_at":"2026-03-16T15:30:43Z","references":["https://osv.dev/vulnerability/GHSA-3rhr-jr63-hwq5","https://nvd.nist.gov/vuln/detail/CVE-2026-2578","https://github.com/mattermost/mattermost/commit/c6b205f0d77080ef805783de0628b9526af7faec","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-3rhr-jr63-hwq5#Go/github.com/mattermost/mattermost-server","url":"https://osv.dev/vulnerability/GHSA-3rhr-jr63-hwq5"}],"summary":"Mattermost fails to preserve the redacted state of burn-on-read posts during deletion"}