chofstede ansible_jailexec up to 1.x Connection Plugin put_file path traversal

Summaryinfo

A vulnerability, which was classified as very critical, was found in chofstede ansible_jailexec up to 1.x. This affects the function put_file of the component Connection Plugin. Executing a manipulation can lead to path traversal. This vulnerability is registered as CVE-2026-55074. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in chofstede ansible_jailexec up to 1.x. It has been declared as very critical. This vulnerability affects the function put_file of the component Connection Plugin. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Ansible FreeBSD Jail Connection Plugin is an Ansible connection plugin for FreeBSD Jails via jexec. Through version 1.3.0, the jailexec connection plugin's put_file resolved a transfer's destination to a path on the jail host ( + ) and ran mkdir -p and mv there as root on the host. Those commands follow symbolic links, and the path was operated on outside the jail, so a symlink existing inside the jail was followed by the host-side, root-privileged mv. A party controlling content inside a managed jail (the jail's root, or any process able to create a symlink in a directory an Ansible task later writes to) can therefore cause an arbitrary root-owned write on the host, outside the jail — a full jail escape. Arbitrary root-owned host writes are readily escalated to host compromise (e.g. cron, rc.d, authorized_keys). Preconditions for this vulnerability are that the operator runs a copy/template/fetch-style task (anything using put_file) against the jail, and the attacker can place a symlink inside the jail at or above the task's destination before the transfer runs. This issue has been fixed in version 2.0.0.

The advisory is available at github.com. This vulnerability was named CVE-2026-55074 since 06/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/21/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 2.0.0 eliminates this vulnerability.

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Productinfo

Vendor

• chofstede

Name

• ansible_jailexec

Version

• 1.x

Website

• Product: https://github.com/chofstede/ansible_jailexec/

CPE 2.3info

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CPE 2.2info

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