CVE-2026-3228: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in nextscripts NextScripts: Social Networks Auto-Poster
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.
AI Analysis
Technical Summary
CVE-2026-3228 is a stored cross-site scripting vulnerability in the NextScripts: Social Networks Auto-Poster WordPress plugin affecting all versions up to 4.4.6. The issue stems from improper neutralization of input in the snapFB post meta value used by the [nxs_fbembed] shortcode. Authenticated users with Contributor-level privileges or higher can inject arbitrary scripts that execute in the context of other users viewing the injected content. This vulnerability can lead to partial confidentiality and integrity impacts but does not affect availability. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N).
Potential Impact
An attacker with Contributor-level or higher access can inject malicious JavaScript into pages via the vulnerable shortcode, which executes when other users access those pages. This can lead to partial compromise of confidentiality and integrity of user data or session information. There is no direct impact on system availability. The vulnerability requires authenticated access and does not involve user interaction beyond viewing the injected page.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only and consider disabling or removing the NextScripts: Social Networks Auto-Poster plugin if feasible. Monitor for updates from the vendor regarding patches or official mitigations.
CVE-2026-3228: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in nextscripts NextScripts: Social Networks Auto-Poster
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3228 is a stored cross-site scripting vulnerability in the NextScripts: Social Networks Auto-Poster WordPress plugin affecting all versions up to 4.4.6. The issue stems from improper neutralization of input in the snapFB post meta value used by the [nxs_fbembed] shortcode. Authenticated users with Contributor-level privileges or higher can inject arbitrary scripts that execute in the context of other users viewing the injected content. This vulnerability can lead to partial confidentiality and integrity impacts but does not affect availability. The CVSS 3.1 base score is 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N).
Potential Impact
An attacker with Contributor-level or higher access can inject malicious JavaScript into pages via the vulnerable shortcode, which executes when other users access those pages. This can lead to partial compromise of confidentiality and integrity of user data or session information. There is no direct impact on system availability. The vulnerability requires authenticated access and does not involve user interaction beyond viewing the injected page.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only and consider disabling or removing the NextScripts: Social Networks Auto-Poster plugin if feasible. Monitor for updates from the vendor regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-25T20:18:16.001Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b044ddea502d3aa870234e
Added to database: 3/10/2026, 4:20:45 PM
Last enriched: 4/9/2026, 6:46:47 PM
Last updated: 4/28/2026, 7:25:57 AM
Views: 88
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