Stackable – Page Builder Gutenberg Blocks <= 3.13.6 - Unauthenticated CSS Injection
The Stackable – Page Builder Gutenberg Blocks plugin for WordPress is vulnerable to CSS Injection in all versions up to, and including, 3.13.6. This makes it possible for unauthenticated attackers to embed untrusted style information into comments resulting in a possibility of data exfiltration such as admin nonces with limited impact. These nonces could be used to perform CSRF attacks within a limited time window. The presence of other plugins may make additional nonces available, which may pose a risk in plugins that don't perform capability checks to protect AJAX actions or other actions reachable by lower-privileged users.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Stackable – Page Builder Gutenberg Blocks | <= 3.13.6 | 3.13.7 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-94- Platform
- WordPress
- Package
Stackable – Page Builder Gutenberg Blocks- Disclosed
- 11.10.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 1fd0b13c-7447-45da-9608-80b7629d9bbf - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Wordfence Intelligence - Defiant, Inc. Copyright Defiant, Inc. All rights reserved except as granted below. License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026): Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy. Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Vulnerability history: Stackable – Page Builder Gutenberg Blocks
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
- 9
- First → latest
- 03.2022 01.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 9
Disclosures per year
- 2022: 1
- 2023: 1
- 2024: 3
- 2025: 3
- 2026: 1
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Stackable – Page Builder Gutenberg Blocks <= 3.13.6 - Unauthenticated CSS Injection this entry
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