What the vulnerability does
01Description
Missing Authorization vulnerability in Benjamin Intal Stackable stackable-ultimate-gutenberg-blocks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Stackable: from n/a through <= 3.18.1.
Explanation of Vulnerability in Simple Terms
02Summary
Stackable versions up to 3.18.1 lack proper authorization checks, allowing authenticated users to modify content they should not have access to. An attacker with a low-privilege account can alter data through the application's API or interface without proper permission validation. The vulnerability affects the integrity of site content but does not expose sensitive information or cause service disruption.
What an attacker can do
03Attacker Capabilities
Modify content or settings they lack permission to change.
Potential impact on your site
04Site Impact
Unauthorized users can alter site content, pages, or settings within their account level.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site.
Key dates
06Disclosure timeline
September 26, 2025
CVE published
April 28, 2026
Record updated