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CVE-2026-44845

JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment

6.7 Medium

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
High

Exploit likelihood

0.73%Up 0.2 points since Aug 18, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.7

JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment

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.

Record
CVE-2026-44845
CVSS 3.1
6.7 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
Weakness
CWE-1336
Updated
2026-11-02
EUVDEUVD-2026-60468 6.7

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.

Record
EUVD-2026-60468
CVSS 3.1
6.7 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
Updated
2026-11-02
NVD 6.7

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.

Record
CVE-2026-44845
CVSS 3.1
6.7 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
Weakness
CWE-1336
Updated
2026-11-02
OSV 6.7

JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment

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.

Record
CVE-2026-44845
CVSS 3.1
6.7 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
Weakness
CWE-1336
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-44845 is a medium vulnerability (CVSS 6.7) in Jumpserver, published August 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.73%, the 54th percentile. No source names a fixed version.

References

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