CVE-2026-89091 ansible-core - Path Traversal & Remote Code Execution

ansible-core contains a path traversal caused by improper symlink resolution in ansible-galaxy collection install archive extraction, letting attackers overwrite arbitrary files and execute code on the control node, exploit requires victim to install a malicious collection.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
Remote Code Execution, File System Write
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-59

Vendor fix

Update to the latest ansible-core version that includes the fix for this vulnerability.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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