User Frontend exposes every user's email address and phone number
User Frontend before 4.3.10 leaves its user-directory search endpoint unrestricted. An unauthenticated attacker can retrieve email addresses and phone numbers for every registered user, including administrators.
- Component
- User Frontend
- Plugin slug
user-frontend- Affected
- 4.3.0 to < 4.3.10
- Safe version
4.3.10- Published
- Aug 28, 2026
This CVE was published Aug 28, 2026 and is one of 4 known issues for this plugin.
Update, patch or deactivate.
Update User Frontend to 4.3.10 or later and assess the privacy impact for registered users whose contact information may have been exposed.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The User Frontend WordPress plugin before 4.3.10 does not restrict access to its user directory search endpoint, allowing unauthenticated attackers to retrieve the email address and phone number of every registered user, including administrators.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N