RHSA-2026:34368 - Security Advisory

Topic

A new release is now available for Red Hat Satellite 6.18 for 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):

• foreman: Unauthorized modification of host configurations via broken access control (CVE-2026-5135)
• foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation (CVE-2026-5136)
• foreman: Information disclosure via improper validation of nested request parameters (CVE-2026-5138)
• foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)
• yggdrasil-worker-forwarder: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)
• python-pillow: Pillow: Denial of Service via decompression bomb in FITS image processing (CVE-2026-40192)

Bug Fix(es):

• orphan cleanup triggers CapsuleContent::UpdateContentCounts regardless of automatic_content_count_updates setting (SAT-47204)

Solution

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

For detailed instructions how to apply this update, refer to:

https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/updating_red_hat_satellite/index

Affected Products

• Red Hat Satellite 6.18 x86_64
• Red Hat Satellite Capsule 6.18 x86_64
• Red Hat Enterprise Linux for x86_64 9 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
• BZ - 2456336 - CVE-2026-32282 golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root
• BZ - 2458856 - CVE-2026-40192 Pillow: Pillow: Denial of Service via decompression bomb in FITS image processing
• SAT-47204 - orphan cleanup triggers CapsuleContent::UpdateContentCounts regardless of automatic_content_count_updates setting [rhn_satellite_6.18]

CVEs

• CVE-2026-5135
• CVE-2026-5136
• CVE-2026-5138
• CVE-2026-5142
• CVE-2026-32282
• CVE-2026-40192

References

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