{"id":"CVE-2025-55073","revision":"08efb65e2f784a51b4c93cb9024ff997","records":[{"revision":"08efb65e2f784a51b4c93cb9024ff997","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-55073","aliases":[],"title":"MS Teams plugin OAuth allows editing arbitrary posts","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":"2025-11-14T08:03:16.922+00:00","modifiedAt":"2025-11-14T15:46:58.129+00:00","affected":[{"ecosystem":"Vendor product","name":"Mattermost","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"Mattermost\",\n                    \"vendor\": \"Mattermost\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"10.11.3\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.11.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.5.11\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.5.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.12.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.12.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"11.0.0\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.11.4\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.5.12\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.12.1\",\n                            \"status\": \"unaffected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":5.4,"severity":"MEDIUM"}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-55073","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-55073","identifiers":["CVE-2025-55073"]},"retained":false,"historicalAffected":[]}],"coverage":[]}