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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.

PUBLISHED Reserved 2026-03-26 | Published 2026-05-27 | Updated 2026-05-28 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2026-02-24:Discovered
2026-03-26:Vendor Notified
2026-05-27:Disclosed

Credits

Quốc Huy finder

References

www.wordfence.com/...-3e1a-4d7b-9ad0-64be5e18900f?source=cve

plugins.trac.wordpress.org/....4/includes/class-evf-ajax.php

cve.org (CVE-2026-4888)

nvd.nist.gov (CVE-2026-4888)

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