{"cve":"CVE-2026-103962","nvd":{"published":"2026-10-31T08:16:47.613","modified":"2026-10-31T08:16:47.613","status":"Received","description":"The User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'field_attr[required]' parameter in all versions up to, and including, 4.3.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The nonce check on the wpuf_get_child_cat AJAX action is not an effective security barrier because the wpuf_nonce value is publicly localized to every anonymous visitor of any page containing a WPUF shortcode, making it freely harvestable by an unauthenticated attacker.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Frontend.php#L311","https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/wpuf-functions.php#L2025","https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/wpuf-functions.php#L2045","https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/wpuf-functions.php#L2120","https://plugins.trac.wordpress.org/changeset/3770255/wp-user-frontend/trunk/wpuf-functions.php"],"products":[],"source":"nvd","synced_at":"2026-10-31T08:35:03.478229968+00:00"},"epss":null,"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}