{"action":"Upgrade github.com/mattermost/mattermost-server to 0.0.0-20260414103857-b21ef302025e or later.","affected":[{"fixed":"11.5.2","introduced":"11.5.0"},{"fixed":"0.0.0-20260414103857-b21ef302025e","introduced":"0.0.0-20250731163400-5b955468ea1e"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-4053"],"ecosystem":"Go","epss":0.00165,"exploited":false,"fixed_versions":["11.5.2","0.0.0-20260414103857-b21ef302025e"],"ghsa_id":"GHSA-hw87-6jcq-9f8q","id":"tcs_01M5KFD4RS28A1TGDSRX9CY6ZA","modified_at":"2026-06-25T23:11:45.748685627Z","published_at":"2026-05-15T21:31:33Z","references":["https://osv.dev/vulnerability/GHSA-hw87-6jcq-9f8q","https://nvd.nist.gov/vuln/detail/CVE-2026-4053","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"low","score":3.1},"sources":[{"source":"osv","source_id":"GHSA-hw87-6jcq-9f8q","url":"https://osv.dev/vulnerability/GHSA-hw87-6jcq-9f8q"}],"summary":"Mattermost doesn't enforce the PostEditTimeLimit on non-message post fields"}