CVE-2025-27095CWE-266

JumpServer has a Kubernetes Token Leak Vulnerability

Medium · published March 31, 2025

CVSS v3.1
4.3
EPSS
0%
Percentile
24.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00325 · 24.4th percentile
Weakness
CWE-266 · Incorrect Privilege Assignment
Published
2025-03-31T15:08Z
EPSS history
Timeline
  • 31 MAR 15:08Z
    JumpServer has a Kubernetes Token Leak Vulnerability
    cvelistv5