CVE-2026-4347: high-severity vulnerability in inc2734 MW WP Form
MW WP Form <= 5.1.0 - Unauthenticated Arbitrary File Move via move_temp_file_to_upload_dir
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.3%
The MW WP Form plugin for WordPress is vulnerable to arbitrary file moving due to insufficient file path validation via the 'generate_user_filepath' function and the 'move_temp_file_to_upload_dir' function in all versions up to, and including, 5.1.0. This makes it possible for unauthenticated attackers to move arbitrary files on the server, which can easily lead to remote code execution when the right file is moved (such as wp-config.php). The vulnerability is only exploitable if a file upload field is added to the form and the “Saving inquiry data in database” option is enabled.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
inc2734 · MW WP FormRelated CVEs — inc2734 MW WP Form
In the same product, most dangerous first.
CVE-2023-6316CRITICALMW WP Form <= 5.0.1 - Unauthenticated Arbitrary File UploadEPSS 1.4%CVE-2023-6559HIGHMW WP Form <= 5.0.3 - Improper Limitation of File Name to Unauthenticated Arbitrary File DeletionEPSS 1.3%CVE-2026-5436HIGHMW WP Form <= 5.1.1 - Unauthenticated Arbitrary File Move via regenerate_upload_file_keysEPSS 1.1%
References
https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/classes/controllers/class.main.php#L271https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/classes/models/class.directory.php#L138https://www.wordfence.com/threat-intel/vulnerabilities/id/194ee4a0-87c3-42e5-9676-8dd355838b78?source=cve