{"id":"GHSA-ff85-qw3h-g9vp","revision":"5bbb62d6de0f418e91e75c480a872eff","records":[{"revision":"5bbb62d6de0f418e91e75c480a872eff","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-ff85-qw3h-g9vp","aliases":["CVE-2025-55073","GO-2025-4129"],"title":"Mattermost allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL","description":"Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.","state":0,"publishedAt":"2025-11-14T09:30:27+00:00","modifiedAt":"2025-11-18T16:13:46.897397+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.11.0"},{"kind":"fixed","version":"10.11.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.5.0"},{"kind":"fixed","version":"10.5.12"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.12.0"},{"kind":"fixed","version":"10.12.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"8.0.0-20250929212932-a41db04d2746"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["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://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"sourceUrl":"https://github.com/advisories/GHSA-ff85-qw3h-g9vp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-ff85-qw3h-g9vp","identifiers":["GHSA-ff85-qw3h-g9vp","CVE-2025-55073","GO-2025-4129"]},"retained":false,"historicalAffected":[]}],"coverage":[]}