CVE-2022-26138 is a vulnerability in Atlassian Confluence
Published on July 20, 2022
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.
Known Exploited Vulnerability
This Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext. A remote unauthenticated attacker can use these credentials to log into Confluence and access all content accessible to users in the confluence-users group.
The following remediation steps are recommended / required by August 19, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2022-26138 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
Use of Hard-coded Credentials
The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
Products Associated with CVE-2022-26138
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-26138 are published in Atlassian Confluence:
Affected Versions
Atlassian Questions For Confluence:- Version 2.7.34 is affected.
- Version 2.7.35 is affected.
- Version 3.0.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.