CVE-2026-104126: medium-severity vulnerability in jumpserver
JumpServer: Ansible Automation Template Rendering Allows Unsafe Lookup Plugin Invocation
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.4%
exploitation probability
0.4%top 70% 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-lts, JumpServer's Ansible-based automation rendering can evaluate attacker-controlled template expressions from users who have permission to create or execute affected automation tasks. Crafted content can invoke sensitive Ansible lookup behavior, including file, pipe, env, and password lookups, within the Ansible execution context, which can disclose files or environment values and may permit limited command execution under the privileges of the automation process. The issue does not provide unauthenticated access or direct access to unrelated JumpServer assets. This issue is fixed in version 4.10.17-lts.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
Affected products
jumpserver · jumpserverRelated 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%