CVE-2025-27095
mediumpriority · track · 0EPSS 0.003 · 26 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (4)
External citations — patches, advisories, analysis.
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-5q9w-f4wh-f535Patchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-27095cnnvd
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-5q9w-f4wh-f535enisa_euvd
- https://github.com/jumpserver/jumpserver/security/advisories/GHSA-5q9w-f4wh-f535ExploitVendor Advisorynvd
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