CVE-2023-28409
CWE-434Published: May 23, 2023· Updated: Jun 17, 2026
Official Description
Unrestricted upload of file with dangerous type exists in MW WP Form versions v4.4.2 and earlier, which may allow a remote unauthenticated attacker to upload an arbitrary file.
Risk Analysis
MW WP Form versions 4.4.2 and earlier allow unauthenticated remote attackers to upload arbitrary files due to unrestricted file type validation. This critical flaw could lead to remote code execution on the affected server.
There is no known public exploit, but the vulnerability is remotely exploitable with low complexity.
Upgrade to the latest version of MW WP Form. Implement strict file extension and MIME type filtering for all user uploads.
Technical Analysis
CVE-2023-28409 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-28409 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts