This indicates an attack attempt to exploit a Command Injection Vulnerability in GitLab Community and Enterprise Edition.
The vulnerability is due to insufficient validation of user-supplied image files. A remote attacker can exploit this vulnerability by sending a crafted request to the target system. Successful exploitation results in remote code execution.
GitLab Community Edition (CE) and Enterprise Edition (EE) 13.10.x prior to 13.10.3
GitLab Community Edition (CE) and Enterprise Edition (EE) 13.9.x prior to 13.9.6
GitLab Community Edition (CE) and Enterprise Edition (EE) 11.9.x prior to 13.8.8
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.