Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.
Atlassian ยท Confluence Data Center and Server
Known ransomware use: Known
Follow the source advisory and validate exposure in your environment.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.
Recent reporting that mentions CVE-2023-22515.
Organizations should brace for mass exploitation of CVE-2023-22515, an uber-critical security bug that opens the door to crippling supply chain attacks on downstream victims.