What the vulnerability does
01Description
The Breadcrumb NavXT plugin for WordPress is vulnerable to authorization bypass through user-controlled key in versions up to and including 7.5.0. This is due to the Gutenberg block renderer trusting the $_REQUEST['post_id'] parameter without verification in the includes/blocks/build/breadcrumb-trail/render.php file. This makes it possible for unauthenticated attackers to enumerate and view breadcrumb trails for draft or private posts by manipulating the post_id parameter, revealing post titles and hierarchy that should remain hidden.
Explanation of Vulnerability in Simple Terms
02Summary
Breadcrumb NavXT versions 7.5.0 and earlier contain an authorization flaw that allows unauthenticated attackers to read sensitive information over the network. The vulnerability requires no user interaction and can be exploited remotely. Site administrators should update to a version newer than 7.5.0 to remediate the issue.
What an attacker can do
03Attacker Capabilities
Read sensitive information from the site without authentication.
Potential impact on your site
04Site Impact
Unauthorized users can access confidential data exposed by the plugin.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
February 19, 2026
CVE published
April 8, 2026
Record updated
