{"id":"CVE-2026-55074","summary":"Ansible FreeBSD Jail Connection Plugin: Jail escape via symlink following in put_file (host-side root mv)","details":"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.","aliases":["GHSA-cxgv-hp74-jj7r","PYSEC-2026-3658"],"modified":"2026-09-23T03:47:14.308738446Z","published":"2026-09-21T14:24:55.995Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-59"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55074.json"},"references":[{"type":"WEB","url":"https://github.com/chofstede/ansible_jailexec/releases/tag/v2.0.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55074.json"},{"type":"ADVISORY","url":"https://github.com/chofstede/ansible_jailexec/blob/main/docs/security/advisory-2.0.0-jail-escape.md"},{"type":"ADVISORY","url":"https://github.com/chofstede/ansible_jailexec/security/advisories/GHSA-cxgv-hp74-jj7r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55074"},{"type":"FIX","url":"https://github.com/chofstede/ansible_jailexec/commit/6e80eecb2db7aebd1258fded6ae5c3aba1dd4123"},{"type":"FIX","url":"https://github.com/chofstede/ansible_jailexec/pull/6"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chofstede/ansible_jailexec","events":[{"introduced":"0"},{"fixed":"d0d912761b59aab3a9861e7d5854374506b0a89b"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"2.0.0"}]}}],"versions":["v1.3.0","v1.2.0","1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55074.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}