Vulnerability Description
A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomy_scope controller method does not properly validate organization and location IDs from nested request parameters, bypassing existing authorization checks. This allows the user to leak sensitive infrastructure metadata, including subnet topology, IP ranges, gateways, DNS servers, and VLAN IDs, from organizations and locations they are not authorized to access.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Satellite | >= 6.16, < 6.16.10 |
| Redhat | Enterprise Linux | 8.0 |
| Theforeman | Foreman | < 3.18.2 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:34365Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:34366Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:34367Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:34368Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-5138Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2452971Issue TrackingVendor Advisory
FAQ
What is CVE-2026-5138?
CVE-2026-5138 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomy_scope controller ...
How severe is CVE-2026-5138?
CVE-2026-5138 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5138?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Satellite, Redhat Enterprise Linux, Theforeman Foreman.