CVE-2026-21579: confluence data center from 7.19.26 (inclusive), through 7.19.30 (inclusive), from 8.5.14 (inclusive), through 8.5.31…

Affected technology

confluence data center · from 7.19.26 (inclusive), through 7.19.30 (inclusive)
atlassian

confluence data center · from 8.5.14 (inclusive), through 8.5.31 (inclusive)
atlassian

confluence data center · from 8.9.5 (inclusive), through 8.9.8 (inclusive)
atlassian

confluence data center · from 9.0.1 (inclusive), through 9.0.3 (inclusive)
atlassian

confluence data center · from 9.1.0 (inclusive), through 9.1.1 (inclusive)
atlassian

confluence data center · from 9.2.0 (inclusive), through 9.2.21 (inclusive)
atlassian

confluence data center · from 10.0.2 (inclusive), through 10.0.3 (inclusive)
atlassian

confluence data center · from 10.1.0 (inclusive), through 10.1.2 (inclusive)
atlassian

confluence data center · from 10.2.0 (inclusive), through 10.2.13 (inclusive)
atlassian

Confluence Data Center · 10.2.0 to 10.2.13, 10.1.0 to 10.1.2, 10.0.2 to 10.0.3, 9.2.0 to 9.2.21, 9.1.0 to 9.1.1, 9.0.1 to 9.0.3, 8.9.5 to 8.9.8, 8.5.14 to 8.5.31, 7.19.26 to 7.19.30
Atlassian

Description’s affected range: versions 7.17.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could access information they should not be able to access under the conditions described by the source. Vendor/CNA’s CVSS 4.0 assessment (base score 8.2/10) rates confidentiality impact as high; integrity and availability impact as none.