CVE-2025-3515: Drag and Drop Multiple File Upload for Contact Form 7 <= 1.3.8.9 - Unauthenticated Arbitrary File Upload via Insufficient Blacklist Checks

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-17 · updated 2026-06-17
Weakness: CWE-434

Description

The Drag and Drop Multiple File Upload for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in all versions up to, and including, 1.3.8.9. This makes it possible for unauthenticated attackers to bypass the plugin's blacklist and upload .phar or other dangerous file types on the affected site's server, which may make remote code execution possible on the servers that are configured to handle .phar files as executable PHP scripts, particularly in default Apache+mod_php configurations where the file extension is not strictly validated before being passed to the PHP interpreter.

Affected products

glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7: before 1.3.9.0 — fixed in 1.3.9.0

How to fix

Upgrade to a fixed version: glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7 1.3.9.0. Check the vendor advisory for mitigations.

References

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