Medium severity · published Oct 19, 2026
CVE-2026-112159
JumpServer Template Rendering os command injection
5.5
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JU
JumpServer · Jumpserver
4.10.0; 4.10.1; 4.10.2; 4.10.3; 4.10.4; 4.10.5; +14 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-112159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-112159
gist.github.com
https://gist.github.com/Seikruun/b628bb6d4403d9c41a54a4b92d775583
github.com
https://github.com/jumpserver/jumpserver/
github.com
https://github.com/jumpserver/jumpserver/commit/fcf2904cdb884230e9676f50f37a44d09fa97040
github.com
https://github.com/jumpserver/jumpserver/pull/17500/
github.com
https://github.com/jumpserver/jumpserver/releases/tag/v5.0.0
vuldb.com
https://vuldb.com/cve/CVE-2026-112159
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