CVE-2026-78363: Unknown Mw Wp Form

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Unknown Mw Wp Form: before 5.1.5 (fixed in 5.1.5)

Published 2026-09-01. Last modified 2026-09-01.