7.1

CVE-2026-21577

This High severity DoS (Denial of Service) vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center.

This DoS (Denial of Service) vulnerability, with a CVSS Score of 7.1, allows an authenticated 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 9.2: Upgrade to a release greater than or equal to 9.2.17

 Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.7

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 Penetration Testing program.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Atlassian ≫ Confluence Data Center Version >= 9.0.1 <= 9.0.3
Atlassian ≫ Confluence Data Center Version >= 9.1.0 <= 9.1.1
Atlassian ≫ Confluence Data Center Version >= 9.2.0 <= 9.2.15
Atlassian ≫ Confluence Data Center Version >= 9.3.1 <= 9.3.2
Atlassian ≫ Confluence Data Center Version >= 9.4.0 <= 9.4.1
Atlassian ≫ Confluence Data Center Version >= 9.5.1 <= 9.5.4
Atlassian ≫ Confluence Data Center Version >= 10.0.2 <= 10.0.3
Atlassian ≫ Confluence Data Center Version >= 10.1.0 <= 10.1.2
Atlassian ≫ Confluence Data Center Version >= 10.2.0 <= 10.2.6
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.156
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Atlassian 7.1 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://confluence.atlassian.com/pages/viewpage.action?pageId=1821999345
Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-104334
Issue Tracking