{"id":"CVE-2023-3615","aliases":["EUVD-2023-44264","GHSA-f56r-hfv8-q98c"],"status":"published","title":"Lack of server certificate validation in websockets connection","description":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00346,"percentile":0.28394,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2023-07-17T15:33:25Z","modified":"2026-06-17T06:14:28Z","products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost ios app"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3615"},{"url":"https://github.com/advisories/GHSA-f56r-hfv8-q98c"}],"sources":{"cve":[{"id":"CVE-2023-3615","title":"Lack of server certificate validation in websockets connection","description":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.\n\n","status":"published","published":"2023-07-17T15:33:25.752Z","modified":"2024-10-30T15:21:49.715Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:35:24.707957Z"}],"euvd":[{"id":"EUVD-2023-44264","description":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.\n\n","status":"published","published":"2023-07-17T15:33:25Z","modified":"2024-10-30T15:21:49Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:05:14.330068Z"}],"ghsa":[{"id":"GHSA-f56r-hfv8-q98c","title":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS...","description":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.\n\n","status":"published","published":"2023-07-17T18:31:28Z","modified":"2024-04-04T06:11:17Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:56:39.852376Z"}],"nvd":[{"id":"CVE-2023-3615","description":"Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.\n\n","status":"published","published":"2023-07-17T16:15:11.237Z","modified":"2026-06-17T06:14:28.36Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:08:17.044696Z"}]}}