{"id":"CVE-2026-11961","aliases":["EUVD-2026-45146","GHSA-55mp-h634-7h25"],"status":"published","title":"User Registration \u0026 Membership \u003c 5.2.3 - Unauthenticated Privilege Escalation via Unbound members_data Membership ID","description":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.","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":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00383,"percentile":0.32845,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-07-17T06:00:02Z","modified":"2026-07-17T15:44:29Z","products":[{"vendor":"unknown","product":"user registration \u0026 membership"}],"references":[{"url":"https://wpscan.com/vulnerability/2ffab574-8626-472e-b6e4-09bcbaa62349/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11961"},{"url":"https://wpscan.com/vulnerability/2ffab574-8626-472e-b6e4-09bcbaa62349"},{"url":"https://github.com/advisories/GHSA-55mp-h634-7h25"}],"sources":{"cve":[{"id":"CVE-2026-11961","title":"User Registration \u0026 Membership \u003c 5.2.3 - Unauthenticated Privilege Escalation via Unbound members_data Membership ID","description":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.","status":"published","published":"2026-07-17T06:00:02.044Z","modified":"2026-07-17T14:12:22.22Z","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":"adp"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:20:04.463704Z"}],"euvd":[{"id":"EUVD-2026-45146","description":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.","status":"published","published":"2026-07-17T06:00:02Z","modified":"2026-07-17T14:12:22Z","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":"2026-11-02T18:19:50.846094Z"}],"ghsa":[{"id":"GHSA-55mp-h634-7h25","title":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the...","description":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.","status":"published","published":"2026-07-17T09:31:21Z","modified":"2026-07-17T15:32:27Z","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-269"],"updated_at":"2026-11-02T15:09:35.141236Z"}],"nvd":[{"id":"CVE-2026-11961","description":"The User Registration \u0026 Membership  WordPress plugin before 5.2.3 does not validate that the membership tier submitted during public registration is one of the tiers allowed by the registration form before assigning that tier's associated user role, allowing unauthenticated users to register into an arbitrary published membership tier and obtain its role — up to administrator when such a tier exists.","status":"published","published":"2026-07-17T07:16:37.85Z","modified":"2026-07-17T15:44:29.553Z","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"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:30.250437Z"}]}}