What the vulnerability does
01Description
Missing Authorization vulnerability in Vito Peleg Atarim atarim-visual-collaboration allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Atarim: from n/a through <= 4.2.1.
Explanation of Vulnerability in Simple Terms
02Summary
Atarim versions up to 4.2.1 lack proper authorization checks, allowing unauthenticated attackers to modify data and disrupt service availability. The vulnerability requires only network access and no user interaction. Site administrators should update to a version newer than 4.2.1 immediately.
What an attacker can do
03Attacker Capabilities
Modify data and cause service disruptions without authentication.
Potential impact on your site
04Site Impact
Unauthorized users can alter site content and cause downtime without logging in.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
February 20, 2026
CVE published
April 28, 2026
Record updated