CVE-2026-112159: JumpServer Template Rendering os command injection
A security vulnerability has been detected in JumpServer up to 4.10.19. The affected element is an unknown function of the component Template Rendering. The manipulation of the argument IP/HOST leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. Upgrading to version 5.0.0 is sufficient to fix this issue. The identifier of the patch is fcf2904cdb884230e9676f50f37a44d09fa97040. The affected component should be upgraded. The vendor confirms: "This issue was identified quite some time ago, and we have already fixed it in the v5 branch. (...) The fix will also be included in an upcoming v4 release.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
JumpServerto a version that resolves this vulnerability.Fixed in 5.0.0Patch fcf2904cdb884230e9676f50f37a44d09fa97040
Event History
Frequently Asked Questions
Which JumpServer versions need remediation?
JumpServer versions up to 4.10.19 are affected. Upgrading to version 5.0.0 fixes the issue; the vendor also states that a fix will be included in a future v4 release.
What access and interaction does exploitation require?
The vulnerability is remotely exploitable through the Template Rendering component by manipulating the IP/HOST argument. The supplied severity vector indicates that an attacker needs low-level privileges and user interaction.
Is there evidence that exploitation may be practical?
Yes. A public exploit has been disclosed, and the vulnerability is rated as having proof-of-concept exploit maturity.
What should be done if an immediate upgrade is not possible?
The provided information does not identify a workaround. Prioritize upgrading the affected component, and restrict access to Template Rendering and to users able to supply IP/HOST values until a fixed version can be deployed.