CVE-2026-3459Network attack vector

Unauthenticated file upload via wildcard type acceptance

Published Mar 5, 2026 · Updated Mar 5, 2026

Unrestricted file upload in Drag and Drop Multiple File Upload for Contact Form 7 1.3.9.5 and earlier allows remote attackers to write files. The dnd_upload_cf7_upload function accepts the wildcard file-type setting without rejecting server-executable extensions and stores uploads in the site's upload tree. A Contact Form 7 form must contain a multiple-file field configured to accept '*'; uploaded content executes only when the web server processes its type as code.

CVSS severity8.1
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Drag and Drop Multiple File Upload for Contact Form 7 1.3.9.5 and earlier allows remote attackers to write files. The dnd_upload_cf7_upload function accepts the wildcard file-type setting without rejecting server-executable extensions and stores uploads in the site's upload tree. A Contact Form 7 form must contain a multiple-file field configured to accept '*'; uploaded content executes only when the web server processes its type as code.

The record

CVE
CVE-2026-3459
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
Glen Don Mongaya
Product
Drag and Drop Multiple File Upload for Contact Form 7
Classifications
CWE-434, CAPEC-1, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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=* <=1.3.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Glen Don Mongaya · Drag and Drop Multiple File Upload for Contact Form 7version=* <=1.3.9.5

Published CVSS scores

8.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-434Unrestricted Upload of File with Dangerous Type
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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