Rapid7 Observed Exploitation of Atlassian Confluence CVE-2023-22518

As of November 5, 2023, Rapid7 Managed Detection and Response (MDR) is observing exploitation of Atlassian Confluence in multiple customer environments, including for ransomware deployment. We have confirmed that at least some of the exploits are targeting CVE-2023-22518, an improper authorization vulnerability affecting Confluence Data Center and Confluence Server.

Atlassian published an advisory for the vulnerability on October 31, 2023. MDR has also observed attempts to exploit CVE-2023-22515, a critical broken access control vulnerability in Confluence that came to light on October 4.

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Source: Rapid7