Drag and Drop File Upload for Contact Form 7 <= 1.1.3 - Unauthenticated Arbitrary File Upload via sanitize_file_name Bypass

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Summary

CVECVE-2026-5364
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 06:16:08 UTC
Updated2026-04-24 06:16:08 UTC
DescriptionThe Drag and Drop File Upload for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file upload in versions up to, and including, 1.1.3. This is due to the plugin extracting the file extension before sanitization occurs and allowing the file type parameter to be controlled by the attacker rather than being restricted to administrator-configured values, which when combined with the fact that validation occurs on the unsanitized extension while the file is saved with a sanitized extension, allows special characters like '$' to be stripped during the save process. This makes it possible for unauthenticated attackers to upload arbitrary PHP files and potentially achieve remote code execution, however, an .htaccess file and name randomization is in place which restricts real-world exploitability.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Addonsorg Drag And Drop File Upload For Contact Form 7 affected 1.1.3 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/0548608d-17d5-46f4-9d64-6e3b0... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/tags/1.1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/trunk/ba... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/tags/1.1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/tags/1.1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/trunk/ba... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/tags/1.1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/trunk/ba... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-contact-form-7/trunk/fr... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Thomas Sanzey (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-01T18:01:26.000ZVendor Notified
CNA2026-04-23T16:36:09.000ZDisclosed
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