Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder: A security weakness

Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder is affected by a security weakness. Exploitation requires an authenticated subscriber account. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 3.4.7.

CVE / CNA score 4.3 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder
Plugin slug: everest-forms
Affected: <= 3.4.7
Safe version: See mitigation notes
Published: May 28, 2026
Weakness: CWE-862 — Missing Authorization

This CVE was published May 28, 2026 and is one of 24 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder when a release after 3.4.7 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 3.6.0, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

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.

Source record

Technical description

The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder plugin for WordPress is vulnerable to unauthorized email sending due to a missing capability check on the send_test_email() function in all versions up to, and including, 3.4.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to send test emails to arbitrary addresses from the server.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

Primary and upstream sources

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