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Medium · 6.4 Public exploit CVE-2026-3228 EUVD-2026-10484

NextScripts: Social Networks Auto-Poster <= 4.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'nxs_fbembed' Shortcode

Published Mar 10, 2026 · Updated Apr 8, 2026 · Assigned by Wordfence

Vendor: nextscripts Product: NextScripts: Social Networks Auto-Poster Category: Web / CMS

Description

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

VendorProductAffectedFixed
nextscripts NextScripts: Social Networks Auto-Poster ≤ 4.4.6 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • NULL200OK/CVE-2026-3228 ★ 2 · Mar 11, 2026

    CVE-2026-3228 - NextScripts WordPress Plugin Stored XSS Scanner & Exploit

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References