CVE-2026-5138

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/07/2026

Last modified:

09/07/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

4.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:redhat:satellite::::::::	6.16 (including)	6.16.10 (excluding)
cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:a:redhat:satellite::::::::	6.17 (including)	6.17.9 (excluding)
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:a:redhat:satellite::::::::	6.18 (including)	6.18.7 (excluding)
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:a:redhat:satellite::::::::	6.19 (including)	6.19.2 (excluding)
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:a:theforeman:foreman::::::::		3.18.2 (excluding)
cpe:2.3:a:theforeman:foreman::::::::	3.19.0 (including)	3.19.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-5138

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools