RCE in Jumpserver
CVE-2026-112159
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Jumpserver — versions 4.10.0, 4.10.1, 4.10.10
Weakness classification (CWE)
References
- vuldb.com/vuln/422286 (technical-description, vdb-entry)
- vuldb.com/vuln/422286/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-112159 (third-party-advisory)
- vuldb.com/submit/964676 (third-party-advisory)
- gist.github.com/Seikruun/b628bb6d4403d9c41a54a4b92d775583 (exploit)
- github.com/jumpserver/jumpserver/pull/17500/ (issue-tracking, patch)
- github.com/jumpserver/jumpserver/commit/fcf2904cdb884230e9676f50f37a44d09fa97040 (patch)
- github.com/jumpserver/jumpserver/releases/tag/v5.0.0 (patch)
- github.com/jumpserver/jumpserver/ (product)
Frequently asked questions
- What is CVE-2026-112159?
- CVE-2026-112159 is a medium-severity vulnerability in Jumpserver, classified under Command Injection. CVSS score: 5.5/10. Published 2026-10-19.
- How severe is CVE-2026-112159?
- Medium severity. CVSS v3 base score is 5.5 out of 10.