Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution
CVSS score
8.8
EPSS probability
%0.5
Risk score
0.0
Published
3 d ago
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Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-89091 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
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.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-89091 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | Migration Toolkit for Applications 8 | View |
| 2 | Red Hat | Migration Toolkit for Virtualization | View |
| 3 | Red Hat | OpenShift Service Mesh 3 | View |
| 4 | Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | View |
| 5 | Red Hat | Red Hat Ansible Automation Platform 2 | View |
| 6 | Red Hat | Red Hat Ansible Automation Platform Ansible Core 2 | View |
| 7 | Red Hat | Red Hat Certification Program for Red Hat Enterprise Linux 9 | View |
| 8 | Red Hat | Red Hat Discovery 2 | View |
| 9 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 10 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 11 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 12 | Red Hat | Red Hat OpenShift Container Platform 4 | View |
| 13 | Red Hat | Red Hat OpenStack Platform 17.1 | View |
| 14 | Red Hat | Red Hat OpenStack Platform 18.0 | View |
| 15 | Red Hat | Red Hat Satellite 6 | View |
| 16 | Red Hat | Red Hat Update Infrastructure 5 | View |
| 17 | Red Hat | Self-service automation portal 2 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.8 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD |
| 8.8 | CVSS V3_1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-89091 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-89091 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
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Get this vulnerability through the API
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