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.
References
| Link | Resource |
|---|---|
| https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034 | Vendor Advisory |
| https://jira.atlassian.com/browse/CONFSERVER-100907 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
05 Dec 2025, 19:22
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
| First Time |
Atlassian confluence Data Center
Atlassian confluence Server Atlassian |
|
| References | () https://confluence.atlassian.com/pages/viewpage.action?pageId=1652920034 - Vendor Advisory | |
| References | () https://jira.atlassian.com/browse/CONFSERVER-100907 - Vendor Advisory |
21 Oct 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-405 |
21 Oct 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-21 16:15
Updated : 2025-12-05 19:22
NVD link : CVE-2025-22166
Mitre link : CVE-2025-22166
CVE.ORG link : CVE-2025-22166
JSON object : View
Products Affected
atlassian
- confluence_server
- confluence_data_center
CWE
CWE-405
Asymmetric Resource Consumption (Amplification)
