User Frontend: Reflected cross-site scripting
The User Frontend WordPress plugin before 4.3.14 does not sanitise and escape some user-supplied values before reflecting them into HTML attributes in a publicly reachable AJAX response, leading to Reflected Cross-Site Scripting. The affected action is gated by an anonymous nonce that only validates for logged-out requests, so the payload executes against logged-out visitors rather than authenticated users. The export does not disclose the attacker authentication requirement. The structured affected range is < 4.3.14.
- Component
- User Frontend
- Plugin slug
user-frontend- Affected
- < 4.3.14
- Safe version
4.3.14- Published
- Oct 30, 2026
- Weakness
- Not assigned
This CVE was published Oct 30, 2026 and is one of 4 known issues for this plugin.
Update, patch or deactivate.
Update to a supported release containing the confirmed fix: 4.3.14. Validate input and escape values for their final HTML, attribute or JavaScript context; review affected stored content where applicable.
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 4.3.14 does not sanitise and escape some user-supplied values before reflecting them into HTML attributes in a publicly reachable AJAX response, leading to Reflected Cross-Site Scripting. The affected action is gated by an anonymous nonce that only validates for logged-out requests, so the payload executes against logged-out visitors rather than authenticated users.