CVE-2026-75027
Themify Builder <= 7.8.0 - Missing Authorization to Unauthenticated Arbitrary Builder Data Modification via 'tb_update_old_data' AJAX Action
Description
The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the stored Themify Builder styling data (padding and margin properties) of arbitrary posts, including private and draft posts, by supplying an attacker-controlled post ID and JSON styling payload. The nonce required by the handler is automatically emitted to all frontend pages rendered by the builder via wp_localize_script, meaning any unauthenticated visitor can trivially retrieve a valid nonce from page source and satisfy the only access control in place.
INFO
Published Date :
Aug. 22, 2026, 4:18 a.m.
Last Modified :
Oct. 12, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Themify Builder plugin to the latest version.
- Verify the authorization checks are properly implemented.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-75027.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-75027 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-75027
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-75027 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-75027 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 12, 2026
Action Type Old Value New Value Added Translation Title: Themify Builder de themifyme, Description: El plugin Themify Builder para WordPress es vulnerable a una omisión de autorización en todas las versiones hasta la 7.8.0, inclusive. Esto se debe a que el plugin no verifica correctamente que un usuario está autorizado para realizar una acción. Esto hace posible que atacantes no autenticados modifiquen los datos de estilo almacenados de Themify Builder (propiedades de relleno y margen) de publicaciones arbitrarias, incluyendo publicaciones privadas y borradores, al proporcionar un ID de publicación controlado por el atacante y una carga útil de estilo JSON. El nonce requerido por el gestor se emite automáticamente a todas las páginas de frontend renderizadas por el constructor a través de wp_localize_script, lo que significa que cualquier visitante no autenticado puede recuperar trivialmente un nonce válido del código fuente de la página y satisfacer el único control de acceso existente. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-75027', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-24T12:43:10.162003Z'} -
New CVE Received by [email protected]
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'themifyme', 'product': 'Themify Builder', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '7.8.0'}], 'defaultStatus': 'unaffected'}] Added Description The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the stored Themify Builder styling data (padding and margin properties) of arbitrary posts, including private and draft posts, by supplying an attacker-controlled post ID and JSON styling payload. The nonce required by the handler is automatically emitted to all frontend pages rendered by the builder via wp_localize_script, meaning any unauthenticated visitor can trivially retrieve a valid nonce from page source and satisfy the only access control in place. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-stylesheet.php#L69 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L227 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L518 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L693 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder-stylesheet.php#L69 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L227 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L518 Added Reference https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L693 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3653841%40themify-builder&new=3653841%40themify-builder Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/b1892207-0e51-4b2e-bc71-d6a0111b7041?source=cve