CVE-2026-3228Network attack vector

Stored XSS via unescaped snapFB post meta

Published Mar 10, 2026 · Updated Mar 10, 2026

Stored XSS in NextScripts Corp's Social Networks Auto-Poster 4.4.6 and earlier allows remote authenticated users to inject scripts via a shortcode. The nxs_fbembed shortcode reads the snapFB post meta value and renders it without adequate sanitization or output escaping. Contributor-level access is sufficient, and the stored script executes when a user opens an injected page, enabling browser-context actions.

CVSS severity6.4
Medium
EPSS probability3.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in NextScripts Corp's Social Networks Auto-Poster 4.4.6 and earlier allows remote authenticated users to inject scripts via a shortcode. The nxs_fbembed shortcode reads the snapFB post meta value and renders it without adequate sanitization or output escaping. Contributor-level access is sufficient, and the stored script executes when a user opens an injected page, enabling browser-context actions.

The record

CVE
CVE-2026-3228
Published
Mar 10, 2026
Updated
Mar 10, 2026
Vendor
NextScripts Corp
Product
NextScripts: Social Networks Auto-Poster
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=4.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NextScripts Corp · NextScripts: Social Networks Auto-Posterversion=* <=4.4.6

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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