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Drag and Drop Multiple File Upload for Contact Form 7 < 1.3.9.9 — Unauthenticated Remote Code Execution

CVE-2026-18781Published · Updated

Action summary

Affected: <1.3.9.9Update to 1.3.9.9 or newer

All remediation steps
Watch plugin
Severity
Critical9.8
CVSS
9.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-94 Improper Control of Generation of Code
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Drag and Drop Multiple File Upload for Contact Form 7 drag-and-drop-multiple-file-upload-contact-form-7

  1. Affected< 1.3.9.9
  2. Patched in1.3.9.9

Update to 1.3.9.9 or newer.

You are affected if you run < 1.3.9.9. Version 1.3.9.9 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Drag and Drop Multiple File Upload for Contact Form 7.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.3.9.9, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Drag and Drop Multiple File Upload for Contact Form 7 to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Jakub Herman.

The Drag and Drop Multiple File Upload for Contact Form 7 plugin for WordPress is vulnerable to Remote Code Execution in all versions up to 1.3.9.9. This is due to insufficient validation of user supplied input before it is executed. This makes it possible for unauthenticated attackers to execute arbitrary code on the server.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Drag and Drop Multiple File Upload for Contact Form 7

All 20
More vulnerabilities in Drag and Drop Multiple File Upload for Contact Form 7
SeverityVulnerabilityCVEPublished
Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
<1.3.9.9Update to 1.3.9.9
CVE-2026-14325
Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting via 'drag_n_drop_text' and 'drag_n_drop_browse_text' Settings
≤1.3.9.7Update to 1.3.9.8
CVE-2026-8991
High7.2Unauthenticated Stored Cross-Site Scripting
≤1.3.9.7Update to 1.3.9.8
CVE-2026-49055
High8.1Unauthenticated Arbitrary File Upload via Non-ASCII Filename Blacklist Bypass
≤1.3.9.7Update to 1.3.9.8
CVE-2026-5718
High7.5Unauthenticated Limited Arbitrary File Read via mfile Field
≤1.3.9.6Update to 1.3.9.7
CVE-2026-5710

Timeline

  1. CVE published

    Severity critical, CVSS 9.8

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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