{"action":"Upgrade github.com/mattermost/mattermost-server to 10.5.2+incompatible or later.","affected":[{"fixed":"10.5.2+incompatible","introduced":"10.5.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2025-27936"],"ecosystem":"Go","epss":0.00345,"exploited":false,"fixed_versions":["10.5.2+incompatible"],"ghsa_id":"GHSA-2j87-p623-8cc2","id":"tcs_01M5KG81W9MSR0Q7S1R8WJRGB0","modified_at":"2026-02-04T03:57:14.305984Z","published_at":"2025-04-22T16:56:33Z","references":["https://osv.dev/vulnerability/GO-2025-3618","https://github.com/advisories/GHSA-2j87-p623-8cc2","https://nvd.nist.gov/vuln/detail/CVE-2025-27936","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GO-2025-3618#Go/github.com/mattermost/mattermost-server","url":"https://osv.dev/vulnerability/GO-2025-3618"},{"source":"nvd","source_id":"CVE-2025-27936","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27936"}],"summary":"Mattermost vulnerable to Observable Timing Discrepancy in github.com/mattermost/mattermost-plugin-msteams"}