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CVE-2026-55074— Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)

Quick assessment

Affected
chofstede ansible_jailexec
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 ther

CVSS 8.2 · High EPSS 0.32% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
chofstede ansible_jailexec < 2.0.0 affected
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I. Basic Information for CVE-2026-55074

Vulnerability Information

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Vulnerability Title
Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
chofstede ansible_jailexec < 2.0.0 -

II. Public POCs for CVE-2026-55074

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III. Intelligence Information for CVE-2026-55074

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Patches & Fixes for CVE-2026-55074 (1)

Other References for CVE-2026-55074 (3)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2026-55074

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