Open Mail Relay Vulnerability in Quick Contact Form Plugin for WordPress
CVE-2025-12718

5.8MEDIUM

Key Information:

Vendor

WordPress
Status
Quick Contact Form
Vendor
CVE Published:
17 January 2026

What is CVE-2025-12718?

The Quick Contact Form plugin for WordPress contains a vulnerability that allows unauthenticated attackers to exploit an Open Mail Relay. This is facilitated through the 'qcf_validate_form' AJAX endpoint, where a user-controlled parameter is used to set the 'from' email address. As a result, attackers can send emails to arbitrary recipients using the server's resources. The information that can be compromised is limited to details submitted through the contact form.

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Affected Version(s)

Quick Contact Form * <= 8.2.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset?sfp_email=&s...

CVSS V3.1

Score:
5.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Md. Moniruzzaman Prodhan
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