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TI-2026-24416 Aliases CVE-2026-31864

JumpServer has a Server-Side Template Injection Leading to RCE via YAML Rendering

Priority LOW 32CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-1336.

Summary

JumpServer is an open source bastion host and an operation and maintenance security audit system. a Server-Side Template Injection (SSTI) vulnerability exists in JumpServer's Applet and VirtualApp upload functionality. This vulnerability can only be exploited by users with administrative privileges (Application Applet Management or Virtual Application Management permissions). Attackers can exploit this vulnerability to execute arbitrary code within the JumpServer Core container. The vulnerability arises from unsafe use of Jinja2 template rendering when processing user-uploaded YAML configuration files. When a user uploads an Applet or VirtualApp ZIP package, the manifest.yml file is rendered through Jinja2 without sandbox restrictions, allowing template injection attacks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00369 30th percentileScored 2026-11-07
Fix Fixed jumpserver (jumpserver): 3.10.22, 4.10.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jumpserverjumpserverbefore 3.10.22; 4.0.0 to before 4.10.163.10.22, 4.10.16Patch availableCNA
  • jumpserver Vendorjumpserver Affected before 3.10.22; 4.0.0 to before 4.10.16 Fixed in 3.10.22, 4.10.16 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*before 3.10.22; 4.0.0 to before 4.10.16Vulnerable1Panel-dev
  • cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:* Versions before 3.10.22; 4.0.0 to before 4.10.16 Vulnerable ·1Panel-dev

Remediation

  • Fix · CNA jumpserver (jumpserver) Fixed in 3.10.22, 4.10.16

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-31864

References

Patch 1

Other 1

  • TI-2024-27040 Arbitrary File Read in Ansible Playbooks in Jumpserver CVSS 3.1CRITICAL 10.0
  • TI-2023-23378 Non-MFA account takeover via using only SSH public key to login in jumpserver CVSS 3.1CRITICAL 9.1
  • TI-2023-22607 JumpServer session replays download without authentication CVSS 3.1HIGH 8.2
  • TI-2024-27041 Arbitrary File Write in Ansible Playbooks leads to RCE in Jumpserver CVSS 3.1CRITICAL 10.0
  • TI-2024-19371 JumpServer vulnerable to Jinja2 template injection in Ansible leads to RCE in Celery CVSS 3.1CRITICAL 10.0
  • TI-2024-19370 JumpServer's insecure Ansible playbook validation leads to RCE in Celery CVSS 3.1CRITICAL 10.0
See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences