CVE-2026-44845CWE-1336

CVE-2026-44845

Medium · published August 18, 2026

CVSS v3.1
6.7
EPSS
1%
Percentile
53.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00735 · 53.9th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2026-08-18T01:16Z
References (6)
https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59 · [email protected]https://github.com/jumpserver/jumpserver/pull/16749 · [email protected]https://github.com/jumpserver/jumpserver/pull/16886 · [email protected]https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17 · [email protected]https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q · [email protected]https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 AUG 21:03Z
    JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment
    cvelistv5