{"id":"EUVD-2025-175343","revision":"af2244fb1ac647a19d40915e06974c0a","records":[{"revision":"af2244fb1ac647a19d40915e06974c0a","observedAt":"2026-11-07T01:27:14.447+00:00","statement":{"source":"euvd","id":"EUVD-2025-175343","aliases":["CVE-2025-11777","GHSA-mqcj-8c2g-h97q"],"title":"Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from o…","description":"Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.1,"severity":null}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-175343","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Nov 13, 2025, 5:32:03 PM","dateUpdated":"Nov 13, 2025, 6:01:46 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-2025-175343","identifiers":["EUVD-2025-175343","CVE-2025-11777","GHSA-mqcj-8c2g-h97q"]},"retained":false,"historicalAffected":[]}],"coverage":[]}