{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250929212932-a41db04d2746 or later.","affected":[{"fixed":"8.0.0-20250929212932-a41db04d2746","introduced":"0"}],"component":"github.com/mattermost/mattermost/server/v8","cve_ids":["CVE-2025-55073"],"ecosystem":"Go","epss":0.00196,"exploited":false,"fixed_versions":["8.0.0-20250929212932-a41db04d2746"],"ghsa_id":"GHSA-ff85-qw3h-g9vp","id":"tcs_01M5KGBQANKMA5KEM5ESC5E4M0","modified_at":"2026-03-03T04:57:38.168670Z","published_at":"2025-11-18T15:34:32Z","references":["https://osv.dev/vulnerability/GO-2025-4129","https://github.com/advisories/GHSA-ff85-qw3h-g9vp","https://nvd.nist.gov/vuln/detail/CVE-2025-55073","https://github.com/mattermost/mattermost/commit/375ce229f4923205394d8f27925372b2cbf28130","https://github.com/mattermost/mattermost/commit/6c288aa62bb3343183ec1d0a06360d14aa0193e9","https://github.com/mattermost/mattermost/commit/a41db04d2746ab549d056db4ede4cd803f64989c","https://github.com/mattermost/mattermost/commit/b822cea06bf5683a176e2c92711241bd29cd9389","https://github.com/mattermost/mattermost/commit/e47349ea0fc072ee1dfb196d9bb1c8fd1a589224","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GO-2025-4129#Go/github.com/mattermost/mattermost/server/v8","url":"https://osv.dev/vulnerability/GO-2025-4129"},{"source":"nvd","source_id":"CVE-2025-55073","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55073"}],"summary":"Mattermost allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL in github.com/mattermost/mattermost-server"}