This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.3, allows an attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.25 Confluence Data Center and Server 9.2: Upgrade to a release greater than or equal to 9.2.7 Confluence Data Center and Server 10.0: Upgrade to a release greater than or equal to 10.0.2 See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]). This vulnerability was reported via our Atlassian (Internal) program.

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-100907 advisory.

  - A vulnerability introduced in Confluence Data Center 2.0 allows a unauthenticated remote attacker to render     the host unavailable for its intended users by disrupting the host's services. (CVE-2025-22166)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to its self-reported version number, the Atlassian Confluence application running on the remote host is 2.x prior to 8.5.25, 9.2.x prior to 9.2.7 or 10.x prior to 10.0.2. It is, therefore, affected by a denial of service vulnerability.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
275848	Atlassian Confluence < 8.5.25 / 8.6.x < 9.2.7 / 9.3.x < 10.0.2 (CONFSERVER-100907)	Nessus	CGI abuses	high
115018	Atlassian Confluence 10.x < 10.0.2 Denial of Service	Web App Scanning	Component Vulnerability	high
115017	Atlassian Confluence 9.2.x < 9.2.7 Denial of Service	Web App Scanning	Component Vulnerability	high
115016	Atlassian Confluence 2.x < 8.5.25 Denial of Service	Web App Scanning	Component Vulnerability	high

Detections

Analytics

CVE-2025-22166

high

Tenable Plugins

high

high

high

high