Create Block <= 2.9.0 - Code Injection to Authenticated (Admin+) PHP Code Injection
| CVE | CVE-2026-16623 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | July 24, 2026 |
| Last Updated | August 21, 2026 |
| Researcher |
Pavan Saxena
|
Description
The Create Block plugin for WordPress is vulnerable to Code Injection in versions up to, and including, 2.9.0. This is due to use of `edit_theme_options` instead of `edit_themes` in the REST route permission callbacks, allowing sub-site administrators on multisite installations (who hold `edit_theme_options` but not `edit_themes`) to reach filesystem-mutating endpoints. This makes it possible for authenticated attackers, with admin-level access and above, to inject arbitrary PHP code into theme files by exploiting the overly permissive capability check that granted sub-site administrators on multisite access to theme-file-mutating REST endpoints.
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Vulnerability Details for Create Block Theme
| Software Type | Plugin |
|---|---|
| Software Slug | create-block-theme (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.10.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Create Block Theme
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Create Block Theme <= 1.2.1 - Unauthenticated Arbitrary File Upload | October 5, 2022 |
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