What the vulnerability does
01Description
The Gutenberg Thim Blocks – Page Builder, Gutenberg Blocks for the Block Editor plugin for WordPress is vulnerable to arbitrary file reads in all versions up to, and including, 1.0.1. This is due to insufficient path validation in the server-side rendering of the thim-blocks/icon block. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the contents of arbitrary files on the server via the 'iconSVG' parameter, which can contain sensitive information such as wp-config.php.
Explanation of Vulnerability in Simple Terms
02Summary
Thim Blocks versions 1.0.1 and earlier contain a path traversal vulnerability that allows authenticated users to read files outside the intended directory. An attacker with low-level site access can craft requests to access sensitive files on the server. This vulnerability requires valid user credentials but no additional user interaction.
What an attacker can do
03Attacker Capabilities
Read arbitrary files on the server outside the intended directory.
Potential impact on your site
04Site Impact
Sensitive files (config, database backups, private keys) may be exposed to any authenticated user.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site.
Key dates
06Disclosure timeline
January 17, 2026
CVE published
April 8, 2026
Record updated
