Critical Atlassian Flaw Lets Unauthenticated Attackers Read Known Files Across 8 Products

What happened

A critical flaw in 8 Atlassian Data Center products, which customers host themselves, allows an attacker with no login access to read specific files in each product's web application root directory. The attacker must already know a file's exact name and path and cannot list what the directory holds. Atlassian is a software company based in Sydney, founded in 2002, which employed about 8,200 people in 2022.