What the vulnerability does
01Description
Missing Authorization vulnerability in Wasiliy Strecker / ContestGallery developer Contest Gallery contest-gallery allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Contest Gallery: from n/a through <= 28.1.1.
Explanation of Vulnerability in Simple Terms
02Summary
Contest Gallery versions 28.1.1 and earlier lack proper authorization checks, allowing authenticated users to access sensitive information they should not be able to view. An attacker with a low-privilege account can read data intended for other users or administrators. The vulnerability requires valid login credentials but no additional user interaction.
What an attacker can do
03Attacker Capabilities
Read sensitive data or information belonging to other users or administrators.
Potential impact on your site
04Site Impact
User data and administrative information may be exposed to unauthorized account holders.
Conditions required to exploit
05Prerequisites
Attacker must have a valid low-privilege user account on the site.
Key dates
06Disclosure timeline
February 3, 2026
CVE published
April 28, 2026
Record updated