{"id":"CVE-2026-18216","aliases":["EUVD-2026-59591","GHSA-g4x6-qr8w-c3x7"],"status":"published","title":"Backup Migration \u003c 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login","description":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00506,"percentile":0.43658,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-08-15T06:00:14Z","modified":"2026-08-26T16:30:52Z","products":[{"vendor":"unknown","product":"backup migration"}],"references":[{"url":"https://wpscan.com/vulnerability/f12530c5-4069-42c2-9f1c-b00fc62aa387/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18216"},{"url":"https://wpscan.com/vulnerability/f12530c5-4069-42c2-9f1c-b00fc62aa387"},{"url":"https://github.com/advisories/GHSA-g4x6-qr8w-c3x7"}],"sources":{"cve":[{"id":"CVE-2026-18216","title":"Backup Migration \u003c 2.1.7 - Admin+ Privilege Escalation via Post-Restore Auto-Login","description":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.","status":"published","published":"2026-08-15T06:00:14.986Z","modified":"2026-08-17T20:36:05.964Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:20:12.60856Z"}],"euvd":[{"id":"EUVD-2026-59591","description":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.","status":"published","published":"2026-08-15T06:00:14Z","modified":"2026-08-17T20:36:05Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:48.026284Z"}],"ghsa":[{"id":"GHSA-g4x6-qr8w-c3x7","title":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore...","description":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.","status":"published","published":"2026-08-15T06:32:06Z","modified":"2026-08-17T21:31:18Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:10:35.189726Z"}],"nvd":[{"id":"CVE-2026-18216","description":"The Backup Migration WordPress plugin before 2.1.7 does not properly restrict a post-restore automatic login mechanism, allowing a user who administers one site of a multisite network to obtain a long-lived authenticated session as an administrator of another site in the same network, without credentials and bypassing two-factor authentication.","status":"published","published":"2026-08-15T06:17:08.487Z","modified":"2026-08-26T16:30:52.723Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:37.926464Z"}]}}