CVE-2025-27095— JumpServer has a Kubernetes Token Leak Vulnerability
Quick assessment
Affected
jumpserver jumpserver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
JumpServer是中国杭州飞致云信息科技（JumpServer）公司的一款开源堡垒机。 JumpServer 4.8.0之前版本和3.10.18之前版本存在安全漏洞，该漏洞源于低权限账户可以访问Kubernetes会话功能并操纵kubeconfig文件，可能导致拦截和捕获Kubernetes集群令牌。
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I. Basic Information for CVE-2025-27095
Vulnerability Information
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Vulnerability Title
JumpServer has a Kubernetes Token Leak Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
Vulnerability Title
JumpServer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JumpServer是中国杭州飞致云信息科技（JumpServer）公司的一款开源堡垒机。 JumpServer 4.8.0之前版本和3.10.18之前版本存在安全漏洞，该漏洞源于低权限账户可以访问Kubernetes会话功能并操纵kubeconfig文件，可能导致拦截和捕获Kubernetes集群令牌。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| jumpserver | jumpserver | < 3.10.18 | - |
|
II. Public POCs for CVE-2025-27095
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same weakness: CWE-266
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V. Comments for CVE-2025-27095
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