CVE-2025-4577: Wpbeginner Smash Balloon Social Post Feed

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Smash Balloon Social Post Feed – Simple Social Feeds for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the data-color attribute in all versions up to, and including, 4.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Wpbeginner Smash Balloon Social Post Feed: before 4.3.2 (fixed in 4.3.2)

Published 2025-06-10. Last modified 2026-06-17.