CVE-2022-26138

CRITICAL KEV RANSOMWARE NUCLEI

Atlassian Questions For Confluence - Hardcoded Credentials

Title source: nuclei
STIX 2.1

Exploitation Summary

CVE-2022-26138 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added July 29, 2022, with confirmed use in ransomware campaigns. EIP tracks 4 public exploits from researchers including alcaparra, z92g, Vulnmachines. A Nuclei detection template is also available.

AI-analyzed exploit summary This PoC demonstrates an authentication bypass vulnerability in Atlassian Questions For Confluence due to hardcoded credentials. The exploit involves using predefined credentials to log in as a user with access to the confluence-users group.

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.

Exploits (4)

nomisec WORKING POC 31 stars
by alcaparra · remote
https://github.com/alcaparra/CVE-2022-26138

This PoC demonstrates an authentication bypass vulnerability in Atlassian Questions For Confluence due to hardcoded credentials. The exploit involves using predefined credentials to log in as a user with access to the confluence-users group.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Atlassian Questions For Confluence (versions 2.7.34, 2.7.35, 3.0.2)
No auth needed
Prerequisites: Knowledge of the hardcoded credentials · Network access to the target Confluence instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER 15 stars
by z92g · remote
https://github.com/z92g/CVE-2022-26138

This repository contains a Go-based scanner for CVE-2022-26138, which checks for the presence of a hardcoded password vulnerability in Confluence. It supports both single and batch scanning modes and logs vulnerable hosts.

Classification
Scanner 95%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Atlassian Confluence
No auth needed
Prerequisites: Network access to the target Confluence instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WRITEUP 3 stars
by Vulnmachines · poc
https://github.com/Vulnmachines/Confluence-Question-CVE-2022-26138-

This repository documents CVE-2022-26138, a hardcoded credential vulnerability in the 'Questions for Confluence' app. The app creates a user account with a fixed username and password, allowing unauthorized access to Confluence content.

Classification
Writeup 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Atlassian Confluence Server and Data Center with 'Questions for Confluence' app versions 2.7.34, 2.7.35, and 3.0.2
No auth needed
Prerequisites: 'Questions for Confluence' app installed and enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER
by shavchen · poc
https://github.com/shavchen/CVE-2022-26138

This PoC checks for CVE-2022-26138, an authentication bypass vulnerability in Atlassian Confluence. It sends a crafted login request and checks for a 302 redirect to determine vulnerability.

Classification
Scanner 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Atlassian Confluence (versions affected by CVE-2022-26138)
No auth needed
Prerequisites: Network access to the target Confluence instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Atlassian Questions For Confluence - Hardcoded Credentials
CRITICALby HTTPVoid
Shodan: http.component:"Atlassian Confluence" || http.component:"atlassian confluence"

References (3)

Core 3

Scores

CVSS v3 9.8
EPSS 0.9432
EPSS Percentile 100.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable yes
Technical Impact total

Details

CISA KEV 2022-07-29
VulnCheck KEV 2022-07-29
InTheWild.io 2022-07-24
ENISA EUVD EUVD-2022-30705
Ransomware Use Confirmed
CWE
CWE-798
Status published
Products (3)
atlassian/questions_for_confluence 2.7.34
atlassian/questions_for_confluence 2.7.35
atlassian/questions_for_confluence 3.0.2
Published Jul 20, 2022
KEV Added Jul 29, 2022
Tracked Since Feb 18, 2026