CVE-2023-6316
The MW WP Form plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the '_single_file_upload' function in versions up to, and including, 5.0.1.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The MW WP Form plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the '_single_file_upload' function in versions up to, and including, 5.0.1. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.44% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- mw wp form project/mw wp form
- Source
- security@wordfence.com
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.0.1/classes/models/class.file.php#L60Issue Tracking
- https://plugins.trac.wordpress.org/changeset/3003065/mw-wp-form#file15Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b2c03142-be30-4173-a140-14d73a16dd2b?source=cveThird Party Advisory
- https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.0.1/classes/models/class.file.php#L60Issue Tracking
- https://plugins.trac.wordpress.org/changeset/3003065/mw-wp-form#file15Patch
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b2c03142-be30-4173-a140-14d73a16dd2b?source=cveThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.