Status: UPDATED | Advisory ID: CVE-2026-89091
| CVE | CVE-2026-89091 |
| CVSS Score / Version | 8.8 (High) / CVSS v3.1 |
| Updated | 2026-10-09 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | see table below |
| Classified as | CWE-59 (Improper Link Resolution Before File Access ('Link Following')) |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| 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 Update Infrastructure 5 | ||
| Red Hat | Red Hat OpenShift Container Platform 4 | ||
| Red Hat | Red Hat Ansible Automation Platform 2 | ||
| Red Hat | Red Hat Satellite 6 | ||
| Red Hat | Red Hat Discovery 2 | ||
| Red Hat | Red Hat Ansible Automation Platform Ansible Core 2 | ||
| Red Hat | Self-service automation portal 2 | ||
| Red Hat | Red Hat OpenStack Platform 17.1 | ||
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
| Subsystems | OT Supporting Infrastructure |
| Sectors | Multiple |
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. (NVD)
Monitor Red Hat's web page for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-89091 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-89091 |