{"id":"CVE-2026-109871","kind":"vulnerability","aliases":["CVE-2026-109871"],"related":[],"title":"User Registration & Membership WordPress plugin: unpaid membership renewals accepted","description":"The User Registration & Membership  WordPress plugin before 5.3.2 does not verify that a payment has actually been completed before extending a paid membership subscription, allowing authenticated users with an active paid subscription to renew it indefinitely without paying.","summary":"The User Registration & Membership WordPress plugin before 5.3.2 does not check that a payment completed before it extends a paid membership. A logged-in member with an active paid subscription can keep renewing it indefinitely without paying.","severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["membership-sites","package","user-registration-membership","wordpress"],"not_affected_if":["no-paid-memberships","plugin-at-5.3.2-or-later"],"how_to_check":"- Look for the User Registration & Membership plugin in the WordPress admin under Plugins and check its version against `5.3.2`","fix":"- User Registration & Membership: `5.3.2`","status":"open","published_at":"2026-11-11T06:17:10+00:00","first_seen_at":"2026-11-11T06:25:40+00:00","triaged_at":"2026-11-11T06:28:01+00:00","updated_at":"2026-11-11T06:28:01+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-11T06:28:01Z","model":"claude-haiku-5-5","output":{"fix":"- User Registration & Membership: `5.3.2`","reach":"internet","title":"User Registration & Membership WordPress plugin: unpaid membership renewals accepted","impact":"low","summary":"The User Registration & Membership WordPress plugin before 5.3.2 does not check that a payment completed before it extends a paid membership. A logged-in member with an active paid subscription can keep renewing it indefinitely without paying.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","membership-sites","user-registration-membership"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"Members renew paid subscriptions without paying, causing revenue loss","analyst_note":"","how_to_check":"- Look for the User Registration & Membership plugin in the WordPress admin under Plugins and check its version against `5.3.2`\n- unknown","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["plugin-at-5.3.2-or-later","no-paid-memberships"],"who_is_affected":"Sites running the User Registration & Membership WordPress plugin before 5.3.2 that sell paid memberships or subscriptions. Exposure requires an authenticated member with an active paid subscription; sites without paid memberships can skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000705,"input_tokens":4525,"output_tokens":505,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-109871':12A,15A '-2026':11A,14A '5.3.2':32B,70C 'accept':9A 'activ':53B,92C 'actual':78C 'allow':87C 'authent':88C 'check':35B 'complet':39B,80C 'cve':10A,13A 'extend':42B,82C 'indefinit':60B,98C 'keep':57B 'log':48B 'logged-in':47B 'member':50B 'membership':3A,7A,17B,23B,28B,45B,66C,85C 'membership-sit':16B 'packag':19B 'paid':44B,54B,84C,93C 'pay':62B,100C 'payment':38B,76C 'plugin':5A,30B,68C 'registr':2A,22B,27B,65C 'renew':8A,58B,96C 'site':18B 'subscript':55B,86C,94C 'unpaid':6A 'user':1A,21B,26B,64C,89C 'user-registration-membership':20B 'verifi':73C 'without':61B,99C 'wordpress':4A,24B,29B,67C","nicknames":[],"mitigations":[],"who_affected":"Sites running the User Registration & Membership WordPress plugin before 5.3.2 that sell paid memberships or subscriptions. Exposure requires an authenticated member with an active paid subscription; sites without paid memberships can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","membershipsites","package","userregistrationmembership","wordpress"],"campaign_type":null,"search_a":"'-109871':12A,15A '-2026':11A,14A 'accept':9A 'cve':10A,13A 'membership':3A,7A 'plugin':5A 'registr':2A 'renew':8A 'unpaid':6A 'user':1A 'wordpress':4A","search_b":"'5.3.2':32B 'activ':53B 'check':35B 'complet':39B 'extend':42B 'indefinit':60B 'keep':57B 'log':48B 'logged-in':47B 'member':50B 'membership':17B,23B,28B,45B 'membership-sit':16B 'packag':19B 'paid':44B,54B 'pay':62B 'payment':38B 'plugin':30B 'registr':22B,27B 'renew':58B 'site':18B 'subscript':55B 'user':21B,26B 'user-registration-membership':20B 'without':61B 'wordpress':24B,29B","search_c":"'5.3.2':70C 'activ':92C 'actual':78C 'allow':87C 'authent':88C 'complet':80C 'extend':82C 'indefinit':98C 'membership':66C,85C 'paid':84C,93C 'pay':100C 'payment':76C 'plugin':68C 'registr':65C 'renew':96C 'subscript':86C,94C 'user':64C,89C 'verifi':73C 'without':99C 'wordpress':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T06:17:10+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-109871","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109871","severity":null,"published_at":"2026-11-11T06:17:10+00:00","modified_at":"2026-11-11T06:17:10+00:00","first_seen_at":"2026-11-11T06:25:40+00:00","fetched_at":"2026-11-11T06:25:40+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}