Actively exploited in the wild
Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
Atlassian - Confluence Data Center and Server · Listed in the CISA KEV since 2023-11-07. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2023-22518
CriticalCVSS 9.8KEVSummary
All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability.
Risk Assessment
An unauthenticated attacker can gain full administrative control over Confluence, leading to complete compromise of data and system.
Recommendation
Immediately update Confluence Data Center and Server to the latest version. Atlassian Cloud is not affected.
Other vulnerabilities in Confluence Data Center and Server
See all- CVE-2026-21580Critical
A Critical Stored XSS, Privilege Escalation, and Security Misconfiguration vulnerability in Confluence Data Center and Server allows an unauthenticated attacker to execute arbitrary HTML or JavaScript in a victim's browser, perform actions as a higher-privileged user, and exploit security best-practice oversights.
- CVE-2023-22527CriticalActively exploited
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.
Original NVD description (English source)
All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.