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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-44845
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 21:16:45 UTC
Updated2026-08-18 19:16:48 UTC
DescriptionJumpServer 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.

Risk And Classification

Primary CVSS: v3.1 6.7 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H

EPSS: 0.005010000 probability, percentile 0.406440000 (date 2026-08-18)

Problem Types: CWE-1336 | CWE-1336 CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
3.1CNADECLARED6.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jumpserver Jumpserver affected < 4.10.17 Not specified

References

ReferenceSourceLinkTags
github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/jumpserver/jumpserver/pull/16749 [email protected] github.com
github.com/jumpserver/jumpserver/releases/tag/v4.10.17 [email protected] github.com
github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b... [email protected] github.com
github.com/jumpserver/jumpserver/pull/16886 [email protected] github.com
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