Known exploited vulnerability
CVE-2022-26138
The short answer
CVE-2022-26138 affects Atlassian Questions For Confluence and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-07-29: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
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.
Weakness: CWE-798.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jul 29, 2022
Federal due date Aug 19, 2022
EPSS, next 30 days
98%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Questions For Confluence. NVD's record lists the exact affected versions.
References
- confluence.atlassian.com/doc/confluence-security-advisory-2022-07-20-1142446709.html Vendor Advisory
- jira.atlassian.com/browse/CONFSERVER-79483 Issue TrackingPatchVendor Advisory
- confluence.atlassian.com/doc/confluence-security-advisory-2022-07-20-1142446709.html Vendor Advisory
- jira.atlassian.com/browse/CONFSERVER-79483 Issue TrackingPatchVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26138 US Government Resource
Questions
Is CVE-2022-26138 being exploited?
Yes. CISA added CVE-2022-26138 to its Known Exploited Vulnerabilities catalog on 2022-07-29, with a federal remediation due date of 2022-08-19.
How do I fix CVE-2022-26138?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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