Remote Code Execution in MW WP Form for WordPress Plugin
CVE-2026-78363

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Mw WP Form
Vendor
CVE Published:
1 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-78363?

The MW WP Form WordPress plugin allows shortcodes from user-submitted values to be executed within messages. This occurs when the plugin merges these values into a message, leading to potential exploitation by unauthenticated users to run any registered shortcode on the site. To exploit this vulnerability, the site must be set up to display submitted values back to the visitor after form submission, potentially compromising site security and functionality.

Affected Version(s)

MW WP Form 0 < 5.1.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-78363 - Proof of Concept

References

https://wpscan.com/vulnerability/0569c5f7-2001-4364-a68b-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.