CVE-2021-24508: Smashballoon Smash Balloon Social Post Feed

Medium severity, CVSS 6.1. EPSS: 1.3% chance of exploitation in the next 30 days.

The Smash Balloon Social Post Feed WordPress plugin before 2.19.2 does not sanitise or escape the feedID POST parameter in its feed_locator AJAX action (available to both authenticated and unauthenticated users) before outputting a truncated version of it in the admin dashboard, leading to an unauthenticated Stored Cross-Site Scripting issue which will be executed in the context of a logged in administrator.

Affected products

• Smashballoon Smash Balloon Social Post Feed: before 2.19.2 (fixed in 2.19.2)

Published 2021-09-13. Last modified 2026-06-17.