What the vulnerability does
01Description
The UnderConstructionPage PRO plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 5.76. This is due to the plugin accepting arbitrary local file paths in the template_thumbnail parameter and copying their contents into a publicly accessible uploads file. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary files on the server, which can contain sensitive information.
Explanation of Vulnerability in Simple Terms
02Summary
Under Construction Page (Pro) versions 5.76 and earlier contain a path traversal vulnerability that allows authenticated users to read arbitrary files from the server. An attacker with low-level site access can bypass directory restrictions and access sensitive files outside the intended scope. This affects confidentiality but not data integrity or availability.
What an attacker can do
03Attacker Capabilities
Read arbitrary files from the server, including configuration files and other sensitive data.
Potential impact on your site
04Site Impact
Sensitive files (config, database credentials, private keys) may be exposed to authenticated users with limited permissions.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account on the site.
Key dates
06Disclosure timeline
July 11, 2026
CVE published
July 13, 2026
Record updated
