Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Atlassian | Confluence Data Center | 9.5.1 to 9.5.4, 9.4.0 to 9.4.1, 9.3.1 to 9.3.2, 9.2.0 to 9.2.6, 9.1.0 to 9.1.1, 9.0.1 to 9.0.3, 8.9.0 to 8.9.8, 8.8.0 to 8.8.1, 8.7.1 to 8.7.2, 8.6.1 to 8.6.2, 8.5.3 to 8.5.24, 7.19.16 to 7.19.30 | 10.0.2 to 10.0.3 |
Advisories 1
- WID-SEC-2025-2378 Atlassian Confluence: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 18, 2025