CVE-2026-3228: Nextscripts Nextscripts: Social Networks Auto-Poster

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[nxs_fbembed]` shortcode in all versions up to, and including, 4.4.6. This is due to insufficient input sanitization and output escaping on the `snapFB` post meta value. 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

• Nextscripts Nextscripts: Social Networks Auto-Poster: up to and including 4.4.6

Published 2026-03-10. Last modified 2026-06-17.