Description
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17, an authenticated administrator with Applet Host management and deployment permissions can inject Jinja2 expressions into the IP/Host field or Core Service Address field, causing Ansible to evaluate ansible_host inventory data or playbook variables during Applet Host deployment and execute arbitrary commands on the JumpServer control node. This issue is fixed in version 4.10.17.
References6
- github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11…
- github.com/jumpserver/jumpserver/pull/16749
- github.com/jumpserver/jumpserver/pull/16886
- github.com/jumpserver/jumpserver/releases/tag/v4.10.17
- github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-…
- github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-…
Metrics
- CVSS 3.1
-
6.7
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H - EPSS — exploit probability
- 1% percentile: 55 · as of 11 November 2026
- CWE
- CWE-1336
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.