Atlassian Confluence Improper Authentication Vulnerability (CVC-2023-22518) Notification

Atlassian Confluence Improper Authentication Vulnerability (CVC-2023-22518) Notification

novembro 2, 2023 | NSFOCUS


Recently, NSFOCUS CERT monitored that Atlassian officially fixed an improper authentication vulnerability in the Atlassian Communication Data Center and Server (CVE-2023-22518). Unauthenticated remote attackers can bypass the authentication of the target system to a certain extent by constructing malicious requests and obtain the authority to take over the server through the backend interface, achieving remote code execution. As the attacker is unable to disclose any system data, it will not affect confidentiality. However, the exploitation of this vulnerability can lead to the emptying of Confluence data, which has an irreversible impact on data integrity. Affected users should take protective measures as soon as possible.

Reference link:

Scope of Impact

Affected version

  • Atlas conflict<7.19.16
  • Atlas conflict<8.3.4
  • Atlas conflict<8.4.4
  • Atlas conflict<8.5.3
  • Atlas conflict<8.6.1

Unaffected version

  • Atlas conflict>=7.19.16
  • Atlas conflict>=<8.3.4
  • Atlas conflict>=8.4.4
  • Atlas conflict>=8.5.3
  • Atlas conflict>=8.6.1


Users can investigate whether the current Conflict version is within the affected range and whether the current service is affected by this vulnerability.


Official upgrade

At present, the official security version has been released to fix this vulnerability. It is recommended that affected users update the version in a timely manner for protection to ensure the security and stability of the service:

Temporary measures

Users who cannot upgrade can take the following temporary mitigation measures:

1. Backup application data, detailed instructions can be accessed at the following link:

2. In the absence of any impact on one’s own business, publicly accessible applications (including instances with user authentication) should have limited access to external networks before upgrading or installing patches.


This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.


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