Vulnerability in Jumpserver
CVE-2026-44845
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.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H.
Affected products
- Jumpserver — versions < 4.10.17
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-44845?
- CVE-2026-44845 is a medium-severity vulnerability in Jumpserver, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 6.7/10. Published 2026-08-17.
- How severe is CVE-2026-44845?
- Medium severity. CVSS v3 base score is 6.7 out of 10.