CVE-2026-89091

HIGH 8.8

Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-59
Vendor	red hat
Product	migration toolkit for applications 8
Published	Oct 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Red Hat / Migration Toolkit for Applications 8

All versions affected

Red Hat / Migration Toolkit for Virtualization

All versions affected

Red Hat / OpenShift Service Mesh 3

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2

All versions affected

Red Hat / Red Hat Advanced Cluster Management for Kubernetes 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform Ansible Core 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform Ansible Core 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform Ansible Core 2

All versions affected

Red Hat / Red Hat Ansible Automation Platform Ansible Core 2

All versions affected

Red Hat / Red Hat Certification Program for Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4

All versions affected

Red Hat / Red Hat OpenStack Platform 17.1

All versions affected

Red Hat / Red Hat OpenStack Platform 18.0

All versions affected

Red Hat / Red Hat Satellite 6

All versions affected

Red Hat / Red Hat Update Infrastructure 5

All versions affected

Red Hat / Red Hat Update Infrastructure 5

All versions affected

Red Hat / Red Hat Update Infrastructure 5

All versions affected

Red Hat / Red Hat Update Infrastructure 5

All versions affected

Red Hat / Self-service automation portal 2

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-89091 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2531646

Credits

Red Hat would like to thank Parameter Autonomous Pentesting Agent (parameter.ai) for reporting this issue.