CVE-2026-55074
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
ansible-jailexecPyPI | < 2.0.0 | 2.0.0 |
Affected products
2- Range: <=1.3.0
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-cxgv-hp74-jj7rghsaADVISORY
- github.com/chofstede/ansible_jailexec/commit/6e80eecb2db7aebd1258fded6ae5c3aba1dd4123nvdWEB
- github.com/chofstede/ansible_jailexec/security/advisories/GHSA-cxgv-hp74-jj7rnvdWEB
- github.com/chofstede/ansible_jailexec/blob/main/docs/security/advisory-2.0.0-jail-escape.mdnvd
- github.com/chofstede/ansible_jailexec/pull/6nvd
- github.com/chofstede/ansible_jailexec/releases/tag/v2.0.0nvd
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