CVE-2021-20218 - CVE House
Back to Database
Status published High CVE-2021-20218

A flaw was found in the fabric8 kubernetes-client in version...

Vulnerability Description

A flaw was found in the fabric8 kubernetes-client in version 4.2.0 and after. This flaw allows a malicious pod/container to cause applications using the fabric8 kubernetes-client `copy` command to extract files outside the working path. The highest threat from this vulnerability is to integrity and system availability. This has been fixed in kubernetes-client-4.13.2 kubernetes-client-5.0.2 kubernetes-client-4.11.2 kubernetes-client-4.7.2

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-20218

Credits & Attribution

No credits recorded in the NVD database.

References

More from n/a

View All →
CVE-2025-9910
Versions of the package jsondiffpatch before 0.7.2 are vulnerable to...
Low 2.3
CVE-2025-9802
RemoteClinic profile.php sql injection
Medium 5.1
CVE-2025-9799
Langfuse Webhook promptRouter.ts promptChangeEventSourcing server-side request forgery
Low 2.3
CVE-2025-9775
RemoteClinic edit-my-profile.php unrestricted upload
Medium 6.9
CVE-2025-9774
RemoteClinic edit-patient.php information disclosure
Medium 5.3

Affected Vendor

Affected Software

fabric8-kubernetes-client
Vulnerable Versions:
kubernetes-client-4.2.0 and after

Timeline

Official Publish: March 16th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Weaknesses (CWE)

CWE-22

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1005 Data from Local System
Collection
T1552 Unsecured Credentials
Credential Access
T1565.001 Stored Data Manipulation
Impact