Vulnerabilities / User Frontend / WPSEC-2026-1948
User Frontend <= 4.3.13 - Authenticated (Subscriber+) Payment Bypass to Paid Subscription Pack Activation
Medium 4.3
CWE-840Fixed in 4.3.14
- ID
- WPSEC-2026-1948
- Plugin
- User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission (wp-user-frontend)
- Affected
- all versions before 4.3.14
- Remediation
- Update to 4.3.14 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-840
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-29
- Attack surface
- User Frontend on WPSec AttackSurface
- Fix released
- Published
Description
The User Frontend plugin for WordPress is vulnerable to a payment bypass in all versions up to, and including, 4.3.13, due to the PayPal gateway's free-checkout handling granting the submitted item ID as a subscription pack without checking the item type, while the missing form cost of a post-type payment resolves to zero. This makes it possible for authenticated attackers with subscriber-level access and above to activate a paid subscription pack without paying.
References
- https://wpsec.com/vuln/WPSEC-2026-1948/
- https://plugins.svn.wordpress.org/wp-user-frontend/tags/4.3.14/
- https://wordpress.org/plugins/wp-user-frontend/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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