{"id":"EUVD-2025-186555","revision":"8ba6a76abf7b441caa0821a8dc5de90f","records":[{"revision":"8ba6a76abf7b441caa0821a8dc5de90f","observedAt":"2026-10-27T22:53:55.212+00:00","statement":{"source":"euvd","id":"EUVD-2025-186555","aliases":["CVE-2025-55073","GHSA-ff85-qw3h-g9vp"],"title":"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 …","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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-186555","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Nov 14, 2025, 8:03:16 AM","dateUpdated":"Nov 14, 2025, 3:46:58 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-186555","identifiers":["EUVD-2025-186555","CVE-2025-55073","GHSA-ff85-qw3h-g9vp"]},"retained":false,"historicalAffected":[]}],"coverage":[]}