CVE-2026-89091: Red Hat Migration Toolkit For Applications 8

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.

Affected products

• Red Hat Migration Toolkit For Applications 8
• Red Hat Migration Toolkit For Virtualization
• Red Hat Openshift Service Mesh 3
• Red Hat Red Hat Advanced Cluster Management For Kubernetes 2
• Red Hat Red Hat Ansible Automation Platform 2
• Red Hat Red Hat Ansible Automation Platform Ansible Core 2
• Red Hat Red Hat Certification Program For Red Hat Enterprise Linux 9
• Red Hat Red Hat Discovery 2
• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat Openshift Container Platform 4
• Red Hat Red Hat Openstack Platform 17.1
• Red Hat Red Hat Openstack Platform 18.0
• Red Hat Red Hat Satellite 6
• Red Hat Red Hat Update Infrastructure 5
• Red Hat Self-Service Automation Portal 2

Published 2026-10-08. Last modified 2026-10-09.