CVE-2022-26138
Atlassian Questions For Confluence
Published 20 Jul 2022 · updated 17 Jun 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 29 Jul 2022, with a remediation deadline of 19 Aug 2022 for US federal agencies.
Required action: Apply updates per vendor instructions.
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.
References
- confluence.atlassian.com/doc/confluence-security-advisory-2022-07-20-1142446709.html · Vendor Advisory
- jira.atlassian.com/browse/CONFSERVER-79483 · Issue Tracking, Patch, Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26138 · US Government Resource