CVE-2026-8832 WPCode <= 2.3.5 - Authenticated (Author+) Remote Code Execution via CPT Capability Bypass via XML-RPC wp.newPost
Authenticated attackers with author privileges can execute arbitrary PHP code via XML-RPC due to missing capability restrictions on custom post types.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8832?
CVE-2026-8832 is a high-severity code injection vulnerability in smub WPCode – Insert Headers and Footers + Custom Code Snippets – WordPress Code Manager, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-8832?
How do I fix CVE-2026-8832?
No fix has been published for CVE-2026-8832 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-8832 being exploited?
There is no known exploitation of CVE-2026-8832 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-54cw-c4v7-gx5m.