High 8.8Published Oct 8, 2026

CVE-2026-89091Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution

Updated under an hour ago (2026-10-19 08:00 UTC)

Does this affect you?

It affects Red Hat Migration Toolkit for Applications 8 and 13 other products. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.48%, higher than 40% of scored CVEs.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Red Hat Migration Toolkit for Applications 8

Exploited in the last 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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-59
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.48% (percentile 40)
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Migration Toolkit for Applications 8 redhat:migration_toolkit_applications	8	CNA record
Red Hat Migration Toolkit for Virtualization redhat:migration_toolkit_virtualization	2	CNA record
Red Hat OpenShift Service Mesh 3 redhat:service_mesh	3	CNA record
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2 redhat:acm	2	CNA record
Red Hat Red Hat Ansible Automation Platform 2 redhat:ansible_automation_platform	2	CNA record
Red Hat Red Hat Ansible Automation Platform Ansible Core 2 redhat:ansible_core	2	CNA record
Red Hat Red Hat Certification Program for Red Hat Enterprise Linux 9 redhat:certifications	9	CNA record
Red Hat Red Hat Discovery 2 redhat:discovery	2	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift	4	CNA record
Red Hat Red Hat OpenStack Platform 17.1 redhat:openstack	17.1	CNA record
Red Hat Red Hat Satellite 6 redhat:satellite	6	CNA record
Red Hat Red Hat Update Infrastructure 5 redhat:rhui	5	CNA record
Red Hat Self-service automation portal 2 redhat:ansible_portal	2	CNA record

References

https://access.redhat.com/security/cve/CVE-2026-89091vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2531646issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.