NextScripts Plugin up to 4.4.6 on WordPress Shortcode nxs_fbembed snapFB cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in NextScripts Plugin up to 4.4.6 on WordPress. This affects the function nxs_fbembed of the component Shortcode Handler. This manipulation of the argument snapFB causes cross site scripting. This vulnerability is registered as CVE-2026-3228. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in NextScripts Plugin up to 4.4.6 on WordPress. It has been declared as problematic. Affected by this vulnerability is the function nxs_fbembed of the component Shortcode Handler. The manipulation of the argument snapFB with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. 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. As an impact it is known to affect integrity. The summary by CVE is:

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.

The weakness was published by Muhammad Yudha. The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-3228 since 02/25/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.4
CNA Vector (Wordfence): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/25/2026 CVE reserved
03/10/2026 +13 days Advisory disclosed
03/10/2026 +0 days VulDB entry created
03/15/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Muhammad Yudha
Status: Not defined

CVE: CVE-2026-3228 (🔒)
GCVE (CVE): GCVE-0-2026-3228
GCVE (VulDB): GCVE-100-349945

Entryinfo

Created: 03/10/2026 11:34
Updated: 03/15/2026 22:00
Changes: 03/10/2026 11:34 (66), 03/15/2026 22:00 (1)
Complete: 🔍
Cache ID: 216::103

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