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CVE-2025-22166

HIGH CVSS 3.1: 7.5 EPSS 0.12%
Updated Dec 05, 2025
Atlassian
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions 10.0.0 — 9.2.7
Fixed In 8.5.25
Type CWE-405
Vendor Atlassian
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Atlassian Confluence_Data_Center
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
8.5.0 8.5.25
Atlassian Confluence_Data_Center
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
9.2.0 9.2.7
Atlassian Confluence_Data_Center
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
10.0.0 10.0.2
Atlassian Confluence_Server
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
8.5.0 8.5.25
Atlassian Confluence_Server
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
9.2.0 9.2.7
Atlassian Confluence_Server
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
10.0.0 10.0.2