CVEs / CVE-2022-26138
CVE-2022-26138: Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability
- Known exploited in the CISA KEV catalog since 29 Jul 2022
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 98.2% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Atlassian Questions For Confluence | 2.7.34 | — |
| Atlassian Questions For Confluence | 2.7.35 | — |
| Atlassian Questions For Confluence | 3.0.2 | — |
Exploitation
| In CISA KEV since | 29 Jul 2022 |
|---|---|
| Due date for US federal agencies | 19 Aug 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-798 |
References
- CVE-2022-26138 on NVD
- CVE-2022-26138 in the CISA KEV catalog
- https://confluence.atlassian.com/doc/questions-for-confluence-security-advisory-2022-07-20-1142446709.html (cited by CISA)
- https://confluence.atlassian.com/doc/confluence-security-advisory-2022-07-20-1142446709.html Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-79483 Issue Tracking, Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26138 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.