GitLab CE/EE Denial-of-Service Vulnerability Due to Uncontrolled CPU Consumption in GraphQL Queries

A denial-of-service vulnerability has been identified in GitLab CE/EE versions 17.2 prior to 18.2.7, 18.3 prior to 18.3.3, and 18.4 prior to 18.4.1. This vulnerability allows an attacker to cause uncontrolled CPU usage, potentially leading to a denial-of-service condition, by using specific GraphQL queries.

Impact

Exploitation of this vulnerability can cause excessive CPU consumption, leading to degraded performance or unavailability of the GitLab instance.