CVE-2026-3228
NextScripts: Social Networks Auto-Poster <= 4.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'nxs_fbembed' Shortcode
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
NextScripts: Social Networks Auto-Poster <= 4.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'nxs_fbembed' Shortcode
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.
- Record
CVE-2026-3228- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-10484
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.
- Record
EUVD-2026-10484- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9m3v-p67j-5wcg
The NextScripts: Social Networks Auto-Poster plugin for WordPress is vulnerable to Stored Cross...
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.
- Record
GHSA-9m3v-p67j-5wcg- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-3228- CVSS 3.1
- 6.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | NULL200OK/CVE-2026-3228 | 2026-03-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-3228 is a medium vulnerability (CVSS 6.4) in Nextscripts Nextscripts: Social Networks Auto-poster, published March 10, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.24%, the 91st percentile. No source names a fixed version.
References
wordfence.com/threat-intel/vulnerabilities/id/923c51ba-0ec2-4e32-a86e-404f3fe2ac7c?source=cve
plugins.trac.wordpress.org/browser/social-networks-auto-poster-facebook-twitter-g/trunk/inc-cl/fb.php
nvd.nist.gov/vuln/detail/CVE-2026-3228
github.com/advisories/GHSA-9m3v-p67j-5wcg