CVE-2026-5710 Path traversal in Drag and Drop Multiple File Upload for Contact Form 7
Unauthenticated attackers can read arbitrary files within the wp-content directory via path traversal in the mfile parameter, exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5710?
CVE-2026-5710 is a high-severity path traversal vulnerability in glenwpcoder Drag and Drop Multiple File Upload for Contact Form 7, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Drag and Drop Multiple File Upload for Contact Form 7 plugin for WordPress is vulnerable to Path Traversal leading to Arbitrary File Read in versions up to and including 1.3.9.6. This is due to the plugin using client-supplied mfile[] POST values as the source of truth for email attachment selection without performing any server-side upload provenance check, path canonicalization, or directory containment boundary enforcement. In dnd_wpcf7_posted_data(), each user-submitted filename is directly appended to the plugin's upload URL without sanitization. In dnd_cf7_mail_components(), the URL is converted back to a filesystem path using str_replace() and only file_exists() is used as the acceptance check before attaching the file to the outgoing CF7 email. This makes it possible for unauthenticated attackers to read and exfiltrate arbitrary files readable by the web server process via path traversal sequences in the mfile[] parameter, with files being disclosed as email attachments. Note: This vulnerability is limited to the 'wp-content' folder due to the wpcf7_is_file_path_in_content_dir() function in the Contact Form 7 plugin.
Weakness: CWE-22
Which versions are affected by CVE-2026-5710?
How do I fix CVE-2026-5710?
No fix has been published for CVE-2026-5710 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-5710 being exploited?
There is no known exploitation of CVE-2026-5710 in the wild and no public exploit code.
Sources
Also known as GHSA-j54c-rr2x-ff86.