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critical9.8Known exploited

CVE-2023-22515

Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

Exploited in the wild

This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2023-10-05. Federal due date: 2023-10-13.

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.

Impact

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. 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.

Affected products

VendorProductAffected versions
AtlassianConfluence Data Center
from 8.0.0 before 8.3.3
from 8.4.0 before 8.4.3
from 8.5.0 before 8.5.2
AtlassianConfluence Server
from 8.0.0 before 8.3.3
from 8.4.0 before 8.4.3
from 8.5.0 before 8.5.2

Weakness classification

CWE-20

References