RHSA-2026:34367 - Security Advisory

Topic

An update is now available for Red Hat Satellite 6.16 for RHEL 8 and RHEL 9.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

Description

Red Hat Satellite is a system management solution that allows organizations
to configure and maintain their systems without the necessity to provide
public Internet access to their servers or other client systems. It
performs provisioning and configuration management of predefined standard
operating environments.

Security Fix(es):

• satellite-capsule:el8/foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation (CVE-2026-5136)
• foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation (CVE-2026-5136)
• foreman: Foreman: Information disclosure via improper validation of nested request parameters (CVE-2026-5138)
• satellite-capsule:el8/foreman: Foreman: Information disclosure via improper validation of nested request parameters (CVE-2026-5138)
• satellite-capsule:el8/foreman: Foreman: Unauthorized modification of host configurations via broken access control (CVE-2026-5135)
• foreman: Foreman: Unauthorized modification of host configurations via broken access control (CVE-2026-5135)
• foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)
• satellite-capsule:el8/foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)

Bug Fix(es):

• foreman-maintain from eus repository not enabling proper repos (SAT-47220)

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Satellite Extended Update Support 6.16 for RHEL 9 x86_64
• Red Hat Satellite Extended Update Support 6.16 for RHEL 8 x86_64
• Red Hat Satellite Capsule Extended Update Support 6.16 for RHEL 9 x86_64
• Red Hat Satellite Capsule Extended Update Support 6.16 for RHEL 8 x86_64

Fixes

• BZ - 2452230 - CVE-2026-5135 foreman: Foreman: Unauthorized modification of host configurations via broken access control
• BZ - 2452970 - CVE-2026-5136 foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation
• BZ - 2452971 - CVE-2026-5138 foreman: Foreman: Information disclosure via improper validation of nested request parameters
• BZ - 2452999 - CVE-2026-5142 foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass
• SAT-47220 - foreman-maintain from eus repository not enabling proper repos

CVEs

• CVE-2026-5135
• CVE-2026-5136
• CVE-2026-5138
• CVE-2026-5142

References

• https://access.redhat.com/security/updates/classification/#important