{"schemaVersion":3,"id":"CVE-2026-15222","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 5.2.8. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes.","dates":{"published":"2026-10-16T06:41:08.118Z","modified":"2026-10-16T15:09:37.979Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00184,"percentile":0.07548,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-16T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00184,"percentile":0.07548}],"last30":[{"date":"2026-10-16T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00184,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00184,"percentile":0.07548}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-94","name":"Improper Control of Generation of Code ('Code Injection')","description":"The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/94.html"}],"affected":[{"vendor":"wpeverest","product":"user registration & membership – free & paid memberships, subscriptions, content restriction, user profile, custom user registration & login builder","name":"User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder","label":"user registration & membership – free & paid memberships, subscriptions, content restriction, user profile, custom user registration & login builder","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.2.8","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.2.8","eol":null,"hubHref":"/vendor/wpeverest/user_registration__membership_-_free__paid_memberships_subscriptions_content_restriction_user_profile_custom_user_registration__login_builder"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/f61873db-7365-41cb-a774-8f455a963d78?source=cve","label":"www.wordfence.com/threat-intel/vulnerabilities/id/f61873db-7365-41cb-a774-8f455a963d78?source=cve","hostname":"www.wordfence.com","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset/3741339/user-registration/trunk/includes/class-ur-smart-tags.php","label":"plugins.trac.wordpress.org/changeset/…","hostname":"plugins.trac.wordpress.org","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-16T06:41:08.118Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T15:09:37.979Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:27:37.615Z","stale":false,"partial":false}}