CVE-2026-3228

MEDIUM

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...

Affects 0 products across 5 vendors.

CVSS 3.16.4
EPSS0.3%
Percentile26th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, no user interaction needed, can impact systems beyond the vulnerable component, no availability impact.
CWE Weakness Definitions
CWE-79: Cross-Site Scripting (XSS)

Attacker injects malicious scripts into web pages viewed by other users, executing in the victim's browser context.

Related Attack Patterns (CAPEC)
CAPEC-85 AJAX Footprinting
via CWE-79
CAPEC-209 XSS Using MIME Type Mismatch
via CWE-79
CAPEC-588 DOM-Based XSS
via CWE-79
CAPEC-591 Reflected XSS
via CWE-79
CAPEC-592 Stored XSS
via CWE-79
Show all 6
via CWE-79

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the [nxs_fbembed] shortcode in all versions up to and including 4.4.6.

BSID: BS-2026-GLOBAL-274398-M • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2026-3228?
The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the [nxs_fbembed] shortcode in all versions up to and including 4.4.6.
What is the CVSS score for CVE-2026-3228?
CVE-2026-3228 has CVSS 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. EPSS: 0.3%.
Is CVE-2026-3228 actively exploited?
No confirmed active exploitation of CVE-2026-3228 as of 2026-05-30.
How do I remediate CVE-2026-3228?
Priority: HIGH.
What systems are affected by CVE-2026-3228?
CVE-2026-3228 affects Nextscripts; Plugin; Poster; Scripts; Wordpress.
Vulnerability Details
CVE IDCVE-2026-3228
BSIDBS-2026-GLOBAL-274398-M BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Published2026-03-10
Last Modified2026-04-22
ICS Relevance0%
Weakness (CWE)
Cross-Site Scripting (XSS)
SourceNVD
Official 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.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability arises from insufficient input sanitization and output escaping on the snapFB post meta value. Authenticated attackers with Contributor-level access and above can inject arbitrary scripts.

Exploitation Likelihood: MEDIUM

Affected Products
VendorProductAffected Versions
Nextscripts — —
Plugin — —
Poster — —
Scripts — —
Wordpress — —
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 219 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash5f63de162ba60019db73db7a4280a803dd218ff39c0d1f315186fac4f113edf36d9e10db4991b7512ac562d35ec8e47015c047f0101fe7764179beca7fb9543e
Related CVEs affecting Nextscripts
CVE-2026-27379 8.8 Deserialization of Untrusted Data vulnerability in NextScripts NextScripts so... CVE-2020-36831 6.5 The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerab... CVE-2021-25072 6.5 The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.3.25 d... CVE-2024-2088 6.5 The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerab... CVE-2021-24975 6.1 The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.3.24 d...
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