Unauthorized Email Sending Vulnerability in Everest Forms Plugin for WordPress
CVE-2026-4888

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder
Vendor
CVE Published:
27 May 2026

What is CVE-2026-4888?

The Everest Forms plugin for WordPress is vulnerable to unauthorized email sending due to the absence of a capability check in the send_test_email() function. This flaw affects all versions up to and including 3.4.7 and allows authenticated users with Subscriber-level access or higher to send test emails to any email address, potentially leading to misinformation or phishing attacks. It is crucial for website administrators to update the plugin to mitigate this security risk.

Affected Version(s)

Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder 0 <= 3.4.7

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/everest-forms/...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Quốc Huy
.