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TI-2025-19965 Aliases CVE-2025-27095

JumpServer has a Kubernetes Token Leak Vulnerability

Priority MEDIUM 53CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-266.

Summary

JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.8.0 and 3.10.18, an attacker with a low-privileged account can access the Kubernetes session feature and manipulate the kubeconfig file to redirect API requests to an external server controlled by the attacker. This allows the attacker to intercept and capture the Kubernetes cluster token. This can potentially allow unauthorized access to the cluster and compromise its security. This vulnerability is fixed in 4.8.0 and 3.10.18.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed jumpserver (jumpserver): 3.10.18, 4.8.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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 3.10.18; 4.0.0 to before 4.8.03.10.18, 4.8.0Patch availableCNA
  • jumpserver Vendorjumpserver Affected before 3.10.18; 4.0.0 to before 4.8.0 Fixed in 3.10.18, 4.8.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*before 3.10.18; 4.0.0 to before 4.8.0Vulnerable1Panel-dev
  • cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:* Versions before 3.10.18; 4.0.0 to before 4.8.0 Vulnerable ·1Panel-dev

Remediation

  • Fix · CNA jumpserver (jumpserver) Fixed in 3.10.18, 4.8.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-27095

References

Exploit 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