CVE-2023-22518

Atlassian Confluence Data Center, Atlassian Confluence Server

Published 31 Oct 2023 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 7 Nov 2023, with a remediation deadline of 28 Nov 2023 for US federal agencies. It has been used in ransomware campaigns.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

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.

References