CVE-2026-78363
MediumCVSS 4.8Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
The MW WP Form WordPress plugin before 5.1.5 does not prevent shortcodes in user-submitted values from being executed when it merges those values into a message that it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site. Exploitation requires the site to have been configured to echo a submitted value back to the visitor after submission.
Risk Assessment
An attacker can execute arbitrary shortcodes, potentially leading to unauthorized actions such as content modification, data theft, or privilege escalation.
Recommendation
It is recommended to update the MW WP Form plugin to version 5.1.5 or later.
Other vulnerabilities in MW WP Form
See all- CVE-2026-78364Low
The MW WP Form WordPress plugin before 5.1.6 does not sanitise and escape some of its form settings before outputting them back in an admin dashboard page, which could allow users with a role as low as Editor to perform Stored Cross-Site Scripting attacks against high privilege users such as admin.
- CVE-2026-48871High
Versions of MW WP Form <= 5.1.3 are vulnerable to unauthenticated Cross Site Scripting (XSS). An attacker can exploit this vulnerability to inject malicious JavaScript code.
- CVE-2026-5436High
Vulnerability in the MW WP Form plugin for WordPress up to version 5.1.1. Insufficient validation of the $name parameter allows an unauthenticated attacker to move arbitrary files on the server, potentially leading to remote code execution.
Original NVD description (English source)
The MW WP Form WordPress plugin before 5.1.5 does not prevent shortcodes in user-submitted values from being executed when it merges those values into a message that it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site. Exploitation requires the site to have been configured to echo a submitted value back to the visitor after submission.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS