WPCode <= 2.3.5 — Authenticated (Author+) Remote Code Execution via CPT Capability Bypass via XML-RPC wp.newPost
CVE-2026-8832Published · Updated Action summary
Affected: ≤2.3.5Update to 2.3.6 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
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?
WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager insert-headers-and-footers
- Affected≤ 2.3.5
- Patched in2.3.6
Update to 2.3.6 or newer.
You are affected if you run ≤ 2.3.5. Version 2.3.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.3.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Win3.
The WPCode - Insert Headers and Footers + Custom Code Snippets - WordPress Code Manager plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 2.3.5 This is due to the 'wpcode' custom post type being registered without a custom capability_type or capability restrictions in the wpcode_register_post_type() function, allowing WordPress core to fall back to standard post capabilities for all creation paths including XML-RPC. This makes it possible for authenticated attackers, with author-level access and above, to create and publish executable PHP snippet posts via XML-RPC wp.newPost, which are then executed server-side via eval() in the run_eval() function when the snippet is rendered through the [wpcode] shortcode.
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 WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Snippet Safe Mode Bypass <2.4.0Update to 2.4.0 | CVE-2026-101301 | |
| Medium6.1 | Unauthenticated Reflected Cross-Site Scripting via Tag Filter Links ≤2.0.13Update to 2.0.13.1 | CVE-2023-3524 | |
| Medium4.7 | Cross-Site Request Forgery ≤2.0.8Update to 2.0.9 | CVE-2023-1624 | |
| Medium5.4 | Missing Authorization to Sensitive Key Disclosure/Update ≤2.0.6Update to 2.0.7 | CVE-2023-0328 |
- High7.3Unauthenticated Snippet Safe Mode Bypass
<2.4.0Update to 2.4.0
- Medium6.1Unauthenticated Reflected Cross-Site Scripting via Tag Filter Links
≤2.0.13Update to 2.0.13.1
- Medium4.7Cross-Site Request Forgery
≤2.0.8Update to 2.0.9
- Medium5.4Missing Authorization to Sensitive Key Disclosure/Update
≤2.0.6Update to 2.0.7
Timeline
CVE published
Severity high, CVSS 8.8
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.