CVE-2025-12718Network attack vector

Unauthenticated mail relay via user-controlled sender

Published Jan 17, 2026 · Updated Jan 17, 2026

Open mail relay in Saad Iqbal Quick Contact Form 8.2.6 and earlier allows remote attackers to send email to arbitrary recipients. The qcf_validate_form AJAX endpoint accepts a user-controlled parameter as the message's From address without validating it against a trusted sender value. Unauthenticated access is sufficient to use the WordPress host as a mail relay, while messages remain limited to submitted contact-form details.

CVSS severity5.8
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open mail relay in Saad Iqbal Quick Contact Form 8.2.6 and earlier allows remote attackers to send email to arbitrary recipients. The qcf_validate_form AJAX endpoint accepts a user-controlled parameter as the message's From address without validating it against a trusted sender value. Unauthenticated access is sufficient to use the WordPress host as a mail relay, while messages remain limited to submitted contact-form details.

The record

CVE
CVE-2025-12718
Published
Jan 17, 2026
Updated
Jan 17, 2026
Vendor
Fullworks Plugins
Product
Quick Contact Form
Classifications
CWE-20
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=8.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fullworks Plugins · Quick Contact Formversion=* <=8.2.6

Published CVSS scores

5.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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