CVE-2026-75027
Themify Builder <= 7.8.0 - Missing Authorization to Unauthenticated Arbitrary Builder Data Modification via 'tb_update_old_data' AJAX Action
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 22, 2026
- Updated
- Aug 24, 2026
- Reserved
- Aug 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | Wordfence |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
Themify Builderthemifyme |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b1892207-0e51-4b2e-bc71-d6a0111b7041?source=cve
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L693
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L518
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L227
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder-stylesheet.php#L69
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L693
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L518
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L227
- https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-stylesheet.php#L69
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3653841%40themify-builder&new=3653841%40themify-builder
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.