Medium severity · published Jul 1, 2026
CVE-2026-5138
Foreman: foreman: information disclosure via improper validation of nested request parameters
4.3
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Satellite 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.16 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.16 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.17 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.18 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Satellite 6.19 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
FO
Foreman · Theforeman
before 3.18.2; 3.19.0 before 3.19.1 · source: NVD
SA
Satellite · Redhat
6.16 before 6.16.10; 6.17 before 6.17.9; 6.18 before 6.18.7; 6.19 before 6.19.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5138
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5138
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34365
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34366
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34367
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34368
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-5138
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2452971
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