CVE-2022-26138

9.8 CRITICAL CISA KEV - Actively Exploited
Published: July 20, 2022 Modified: October 24, 2025

Description

The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password. A remote, unauthenticated attacker with knowledge of the hardcoded password could exploit this to log into Confluence and access all content accessible to users in the confluence-users group. This user account is created when installing versions 2.7.34, 2.7.35, and 3.0.2 of the app.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://jira.atlassian.com/browse/CONFSERVER-79483
Source: security@atlassian.com
Issue Tracking Patch Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-79483
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26138
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
94.3%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-08-19

Weaknesses (CWE)

Affected Vendors

atlassian