{"id":"CVE-2025-55035","aliases":["EUVD-2025-34773","GHSA-3359-25fv-h37v"],"status":"published","title":"Mattermost Desktop DoS when user has basic authentication server configured","description":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00315,"percentile":0.2472,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2025-10-16T15:18:25Z","modified":"2026-10-19T16:10:00Z","products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_desktop"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55035"},{"url":"https://github.com/advisories/GHSA-3359-25fv-h37v"}],"sources":{"cve":[{"id":"CVE-2025-55035","title":"Mattermost Desktop DoS when user has basic authentication server configured","description":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.","status":"published","published":"2025-10-16T15:18:25.389Z","modified":"2025-10-16T16:28:05.951Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:32:52.839698Z"}],"euvd":[{"id":"EUVD-2025-34773","description":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.","status":"published","published":"2025-10-16T15:18:25Z","modified":"2025-10-16T16:28:05Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T20:31:31.065489Z"}],"ghsa":[{"id":"GHSA-3359-25fv-h37v","title":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that...","description":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.","status":"published","published":"2025-10-16T18:30:24Z","modified":"2025-10-16T18:30:32Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:04:00.621717Z"}],"nvd":[{"id":"CVE-2025-55035","description":"Mattermost Desktop App versions \u003c=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.","status":"published","published":"2025-10-16T16:15:38.403Z","modified":"2026-10-19T16:10:00.26Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:11:39.069866Z"}]}}