High, CVSS 7.7PyPIPublished
Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)
CVE-2026-55074 · GHSA-cxgv-hp74-jj7r
- Affected
- PyPI ansible-jailexec < 2.0.0
- Fixed in
- 2.0.0· Vendor fix available
- Issue
- Through version 1.3.0, the jailexec connection plugin's putfile resolved a transfer's destination to a path on the jail host (<jail filesystem root + <destination) 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, authorizedkeys). Preconditions: the operator runs a copy/template/fetch-style task (anything using putfile) against the jail, and the attacker can place a symlink inside the jail at or above the task's destination before the transfer runs. Patches: Fixed in…
Recommended action: Upgrade to 2.0.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.