WordPress security changelog
HIGH CVE-2026-8832 Deferred

WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager: Code execution

WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager is affected by code execution. Exploitation requires at least author-level access. Successful exploitation can run attacker-controlled code in the WordPress hosting account. The published affected range is <= 2.3.5.

CVE / CNA score 8.8 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager
Plugin slug
insert-headers-and-footers
Affected
<= 2.3.5
Safe version
> 2.3.5
Published
May 27, 2026
Weakness
CWE-94 — Improper Control of Generation of Code ('Code Injection')

This CVE was published May 27, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

Update WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager to a release after 2.3.5, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources