{"cve":{"cve_id":"CVE-2026-86406","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.0019,"epss_percentile":0.0888,"epss_as_of":"2026-09-15","description":"The User Registration & Membership  WordPress plugin before 5.2.8 does not check the capability of the user making a membership purchase, and does not validate the payment method or the plan submitted with it, allowing any authenticated user such as a subscriber to be granted the WordPress role attached to a paid plan without paying for it. Where the site owner has mapped a plan to a privileged role, this leads to privilege escalation up to administrator.","published_at":"2026-09-13T06:00:08.312000Z","last_modified_at":"2026-09-14T21:10:17.423000Z","cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-269"],"nvd_references":["https://wpscan.com/vulnerability/0fb4ec40-3f92-4c7e-8877-8898b355d78d/"],"vuln_status":"Deferred","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-09-13T09:40:09.695681Z","updated_at":"2026-09-16T00:09:06.500756Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"unknown","vendor_name":"Unknown","product_slug":"user-registration-membership","product_name":"User Registration & Membership","version_start":"4.4.6","version_start_inclusive":true,"version_end":"5.2.8","version_end_inclusive":false,"cpe23_uri":"cve5:unknown:user-registration-membership:4.4.6:5.2.8"}],"exploit_refs":[],"news":[],"references":[{"url":"https://wpscan.com/vulnerability/0fb4ec40-3f92-4c7e-8877-8898b355d78d/","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-09-13T06:00:08.312000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-09-13T11:40:09.696855Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-09-13T11:40:09.696855Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-09-13T11:40:09.696855Z","label":"CVSS score revised","source":"cvelistv5"}]}