CVE-2026-44845mediumCWE-1336

CVE-2026-44845: medium-severity vulnerability in jumpserver

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

Published · Updated

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.7epss 0.7%
exploitation probability
0.7%top 46% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
Affected products
jumpserver · jumpserver
Related CVEs — jumpserver

In the same product, most dangerous first.

CVE-2023-42442HIGHJumpServer session replays download without authenticationEPSS 63.0%CVE-2023-42820HIGHRandom seed leakage in JumpserverEPSS 6.3%CVE-2024-29201CRITICALJumpServer's insecure Ansible playbook validation leads to RCE in CeleryEPSS 6.0%CVE-2024-29202CRITICALJumpServer vulnerable to Jinja2 template injection in Ansible leads to RCE in CeleryEPSS 5.9%CVE-2023-42819HIGHPath traversal in JumpserverEPSS 2.2%CVE-2023-43651HIGHRemote code execution on the host system via MongoDB shell in jumpserverEPSS 2.1%
References
https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59https://github.com/jumpserver/jumpserver/pull/16749https://github.com/jumpserver/jumpserver/pull/16886https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q