{"action":"Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260129164748-7201f42d955f or later.","affected":[{"fixed":"5.3.2-0.20260129164748-7201f42d955f","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-2026-24458"],"ecosystem":"Go","epss":0.0029,"exploited":false,"fixed_versions":["5.3.2-0.20260129164748-7201f42d955f","10.11.11","11.2.3","11.3.1"],"ghsa_id":"GHSA-m5rv-56xx-hfc6","id":"tcs_01M5KFF9T9R7HFA1T22NYG1F8Y","modified_at":"2026-03-23T18:56:03.732922Z","published_at":"2026-03-16T15:30:42Z","references":["https://osv.dev/vulnerability/GHSA-m5rv-56xx-hfc6","https://nvd.nist.gov/vuln/detail/CVE-2026-24458","https://github.com/mattermost/mattermost/commit/7201f42d955f1bc44719b862132546626b60a180","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-m5rv-56xx-hfc6#Go/github.com/mattermost/mattermost-server","url":"https://osv.dev/vulnerability/GHSA-m5rv-56xx-hfc6"}],"summary":"Mattermost fails to properly handle very long passwords"}