CVE-2026-3228

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.

CVSS v3.1

6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS

3.66% chance of exploitation in the next 30 days, 89th percentile

Published

2026-03-10

Updated

2026-04-08

Proof-of-concept exploits (1)

• NULL200OK/CVE-2026-3228

References

• CVE Record
• NVD entry

Related

• CVE-2025-41244
• CVE-2026-22730
• CVE-2026-27944
• CVE-2026-32302
• CVE-2026-34621
• CVE-2026-41940