What the vulnerability does
01Description
Missing Authorization vulnerability in bdthemes Ultimate Post Kit ultimate-post-kit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Post Kit: from n/a through <= 4.0.21.
Explanation of Vulnerability in Simple Terms
02Summary
Ultimate Post Kit versions up to 4.0.21 lack proper authorization checks, allowing authenticated users with low privileges to access or modify content they should not be able to reach. The vulnerability affects multiple areas of the plugin due to missing permission validation. Site administrators should update to a version newer than 4.0.21 as soon as possible.
What an attacker can do
03Attacker Capabilities
Read or modify content and settings they lack permission to access.
Potential impact on your site
04Site Impact
Unauthorized users can view or alter posts, settings, or data depending on plugin functionality.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
March 25, 2026
CVE published
April 28, 2026
Record updated