{"action":"Upgrade github.com/mattermost/mattermost-server to 10.11.11+incompatible or later.","affected":[{"fixed":"10.11.11+incompatible","introduced":"10.11.0-rc1+incompatible"},{"fixed":"11.2.3+incompatible","introduced":"11.2.0-rc1+incompatible"},{"fixed":"11.3.1+incompatible","introduced":"11.3.0-rc1+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-2578"],"ecosystem":"Go","epss":0.00233,"exploited":false,"fixed_versions":["10.11.11+incompatible","11.2.3+incompatible","11.3.1+incompatible"],"ghsa_id":"GHSA-3rhr-jr63-hwq5","id":"tcs_01M5KGFP71W8MK878JJ3Q7ED5C","modified_at":"2026-03-23T18:45:15.226624Z","published_at":"2026-03-23T18:14:47Z","references":["https://osv.dev/vulnerability/GO-2026-4734","https://github.com/advisories/GHSA-3rhr-jr63-hwq5","https://nvd.nist.gov/vuln/detail/CVE-2026-2578","https://github.com/mattermost/mattermost/commit/c6b205f0d77080ef805783de0628b9526af7faec","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GO-2026-4734","url":"https://osv.dev/vulnerability/GO-2026-4734"},{"source":"nvd","source_id":"CVE-2026-2578","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2578"}],"summary":"Mattermost fails to preserve the redacted state of burn-on-read posts during deletion in github.com/mattermost/mattermost-server"}