CVE-2021-39608

CVE-2021-39608 is a Remote Code Execution (RCE) vulnerability affecting FlatCore-CMS version 2.0.7, specifically within the upload addon plugin. This flaw allows a highly privileged remote attacker to execute arbitrary PHP code on the affected system. With a CVSS score of 7.2 (High), the vulnerability is easily exploitable over the network with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. While not listed on the KEV catalog, an authenticated exploit (EDB-50262) is publicly available, though there is no evidence of active exploitation or significant community discussion.