Ad

CVE-2022-26138

CRITICAL CVSS 3.1: 9.8 EPSS 94.3% ACTIVE EXPLOIT
Updated Jan 14, 2026
Atlassian

CISA Known Exploited Vulnerability (KEV)

This vulnerability is actively exploited in the wild. Immediate patching is strongly recommended.

Due Date: Aug 19, 2022

Parameter Value
CVSS 9.8 (CRITICAL)
Type CWE-798 (Hardcoded Credentials)
Vendor Atlassian
Public PoC Yes

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.

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
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 5

Configuration From (including) Up to (excluding)
Atlassian Questions_For_Confluence
cpe:2.3:a:atlassian:questions_for_confluence:2.7.34:*:*:*:*:*:*:*
Atlassian Questions_For_Confluence
cpe:2.3:a:atlassian:questions_for_confluence:2.7.35:*:*:*:*:*:*:*
Atlassian Questions_For_Confluence
cpe:2.3:a:atlassian:questions_for_confluence:3.0.2:*:*:*:*:*:*:*
Atlassian Confluence_Data_Center
cpe:2.3:a:atlassian:confluence_data_center:-:*:*:*:*:*:*:*
Atlassian Confluence_Server
cpe:2.3:a:atlassian:confluence_server:-:*:*:*:*:*:*:*