Nexter Extension <= 2.0.3 — Authenticated(Editor+) Remote Code Execution via metabox
CVE-2023-45751Published · Updated Action summary
Affected: ≤2.0.3Update to 2.0.4 or newer
All remediation steps- Severity
- High7.2
- CVSS
- 7.2CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Nexter Extension – Security, Performance, Code Snippets & Site Toolkit nexter-extension
- Affected≤ 2.0.3
- Patched in2.0.4
Update to 2.0.4 or newer.
You are affected if you run ≤ 2.0.3. Version 2.0.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Nexter Extension – Security, Performance, Code Snippets & Site Toolkit.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.0.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Nexter Extension – Security, Performance, Code Snippets & Site Toolkit to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Rafie Muhammad.
The Nexter Extension plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 2.0.3 via the nxt-code-php-snippet metabox. This allows authenticated attackers with editor-level privileges and above to execute code on the server.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Nexter Extension – Security, Performance, Code Snippets & Site Toolkit
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Authenticated (Subscriber+) Privilege Escalation to 'reset-view' Parameter ≤4.7.11Update to 4.7.12 | CVE-2026-111114 | |
| High8.1 | Unauthenticated PHP Object Injection via 'nxt_unserialize_replace' ≤4.4.6Update to 4.4.7 | CVE-2026-0726 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode ≤4.4.1Update to 4.4.2 | CVE-2025-13731 | |
| Medium6.1 | Reflected Cross-Site Scripting via post and post_id ≤2.0.3Update to 2.0.4 | CVE-2023-45750 |
- High7.5Authenticated (Subscriber+) Privilege Escalation to 'reset-view' Parameter
≤4.7.11Update to 4.7.12
- High8.1Unauthenticated PHP Object Injection via 'nxt_unserialize_replace'
≤4.4.6Update to 4.4.7
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
≤4.4.1Update to 4.4.2
- Medium6.1Reflected Cross-Site Scripting via post and post_id
≤2.0.3Update to 2.0.4
Timeline
CVE published
Severity high, CVSS 7.2
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.