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

2026-03-09 21:33

Muhammad Yudha - DJ

Strategic Overview

Status

Patched in 4.4.7

Affected PluginNextScripts: Social Networks Auto-Poster

Affected Version<= 4.4.6

CVSS6.4Medium

CVECVE-2026-3228

View all NextScripts: Social Networks Auto-Poster vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 4.4.7, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2026-3228 https://www.wordfence.com/threat-intel/vulnerabilities/id/923c51ba-0ec2-4e32-a86e-404f3fe2ac7c

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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