{"id":"EUVD-2025-186555","enisaUuid":"872b18bd-3efd-3a11-a604-d59e1885c4be","description":"Mattermost versions 10.11.x \u003c\u003d 10.11.3, 10.5.x \u003c\u003d 10.5.11, 10.12.x \u003c\u003d 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.","datePublished":"Nov 14, 2025, 8:03:16 AM","dateUpdated":"Nov 14, 2025, 3:46:58 PM","baseScore":5.4,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","references":"https://mattermost.com/security-updates\n","aliases":"CVE-2025-55073\nGHSA-ff85-qw3h-g9vp\n","assigner":"Mattermost","epss":0.2,"enisaIdProduct":[{"id":"7f43f91b-5f93-3b24-9fea-7f9051811681","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.5.0 ≤10.5.11"},{"id":"9c159841-4539-3601-a1d2-d6cf281a8738","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.11.0 ≤10.11.3"},{"id":"e015ea72-4f52-3f28-997d-8d1ed78ba245","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.12.0 ≤10.12.0"}],"enisaIdVendor":[{"id":"be189d3f-b9b9-3baf-a2a6-7be67ee851e5","vendor":{"name":"Mattermost"}}],"enisaIdVulnerability":[{"id":"2489f8d0-0393-39cb-872d-76a374751e93","vulnerability":{"id":"GHSA-ff85-qw3h-g9vp","description":"Mattermost allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL","datePublished":"Nov 14, 2025, 9:30:27 AM","dateUpdated":"Nov 17, 2025, 5:58:31 PM","baseScore":0.0,"references":"https://nvd.nist.gov/vuln/detail/CVE-2025-55073\nhttps://github.com/mattermost/mattermost/commit/375ce229f4923205394d8f27925372b2cbf28130\nhttps://github.com/mattermost/mattermost/commit/6c288aa62bb3343183ec1d0a06360d14aa0193e9\nhttps://github.com/mattermost/mattermost/commit/a41db04d2746ab549d056db4ede4cd803f64989c\nhttps://github.com/mattermost/mattermost/commit/b822cea06bf5683a176e2c92711241bd29cd9389\nhttps://github.com/mattermost/mattermost/commit/e47349ea0fc072ee1dfb196d9bb1c8fd1a589224\nhttps://github.com/mattermost/mattermost\nhttps://mattermost.com/security-updates\n","enisa_id":"EUVD-2025-186555\n","aliases":"GHSA-ff85-qw3h-g9vp\nCVE-2025-55073\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 1:56:19 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"68505be8-300a-32e3-a6ea-619f3215c889","vulnerability":{"id":"CVE-2025-55073","description":"Mattermost versions 10.11.x \u003c\u003d 10.11.3, 10.5.x \u003c\u003d 10.5.11, 10.12.x \u003c\u003d 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.","datePublished":"Nov 14, 2025, 8:03:16 AM","dateUpdated":"Nov 14, 2025, 3:46:58 PM","status":"PUBLISHED","baseScore":5.4,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","references":"https://mattermost.com/security-updates\n","enisa_id":"EUVD-2025-186555\n","assigner":"Mattermost","epss":0.2,"dataProcessed":"Nov 6, 2026, 7:13:53 AM","vulnerabilityProduct":[{"id":"347a6b37-9f32-3ef3-8bbe-ad3ba6f32608","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.12.0 ≤10.12.0"},{"id":"59c28936-02e7-3026-beac-e4de0ebeec37","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.5.0 ≤10.5.11"},{"id":"632cbd54-c3f0-3dc6-8a16-87e62222dfcf","product":{"name":"Mattermost","vendor":{"name":"Mattermost"}},"product_version":"10.11.0 ≤10.11.3"}],"vulnerabilityVendor":[{"id":"fa07f065-c74d-34cc-9a73-29d3da81e7e1","vendor":{"name":"Mattermost"}}]}}],"enisaIdAdvisory":[]}