{"action":"Upgrade github.com/mattermost/mattermost-server to 9.11.10+incompatible or later.","affected":[{"fixed":"9.11.10+incompatible","introduced":"9.11.0+incompatible"},{"fixed":"10.5.2+incompatible","introduced":"10.5.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2025-27538"],"ecosystem":"Go","epss":0.00244,"exploited":false,"fixed_versions":["9.11.10+incompatible","10.5.2+incompatible"],"ghsa_id":"GHSA-j5jw-m2ph-3jjf","id":"tcs_01M5KG8352TVV0TG8XKQC7JN8D","modified_at":"2026-02-04T02:38:30.504509Z","published_at":"2025-04-22T16:56:33Z","references":["https://osv.dev/vulnerability/GO-2025-3620","https://github.com/advisories/GHSA-j5jw-m2ph-3jjf","https://nvd.nist.gov/vuln/detail/CVE-2025-27538","https://mattermost.com/security-updates"],"severity":{"label":"low","score":2.7},"sources":[{"source":"osv","source_id":"GO-2025-3620","url":"https://osv.dev/vulnerability/GO-2025-3620"},{"source":"nvd","source_id":"CVE-2025-27538","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27538"}],"summary":"Mattermost Missing Authentication for Critical Function in github.com/mattermost/mattermost-server"}