Create Block <= 2.9.0 - Code Injection to Authenticated (Admin+) PHP Code Injection
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Create Block Theme | <= 2.9.0 | 2.10.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- WordPress
- Package
Create Block Theme- Disclosed
- 24.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 6f76fd88-95a3-4309-97d2-35c83bd09e55 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Create Block Theme
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2022 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
Disclosures per year
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
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Create Block <= 2.9.0 - Code Injection to Authenticated (Admin+) PHP Code Injection this entry
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