CVE-2026-29955 Details
Description
The `/registercrd` endpoint in KubePlus 4.14 in the kubeconfiggenerator component is vulnerable to command injection. The component uses `subprocess.Popen()` with `shell=True` parameter to execute shell commands, and the user-supplied `chartName` parameter is directly concatenated into the command string without any sanitization or validation. An attacker can inject arbitrary shell commands by crafting a malicious `chartName` parameter value.
A command injection vulnerability has been identified in the KubePlus application, specifically within the kubeconfiggenerator component, all versions through 4.2.0. The issue arises in the '/registercrd' endpoint, where the 'chartName' parameter is improperly validated before being passed to the command execution function. This flaw allows attackers to inject arbitrary shell commands, which are executed with root privileges in the container. Additionally, the exploitation of this vulnerability enables the theft of ServiceAccount Tokens with cluster-admin rights.
There is currently no patched version available. As a workaround, restrict access to the kubeconfighelper service using a NetworkPolicy, reduce the privileges of the kubeplus-saas-provider ServiceAccount, and monitor for abnormal command execution in the kubeconfiggenerator container.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/b0b0haha/f011fdd69adc3ae272a4e3b99af90163 | [email protected] | ExploitThird Party Advisory |
| https://github.com/b0b0haha/CVE-2026-29955/blob/main/README.md | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| cloudark kubeplus | <= 4.2.0 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| Apr 15, 2026 | CVE Modified | CISA-ADP |
| Apr 15, 2026 | CVE Modified | CISA-ADP |
| Apr 13, 2026 | New CVE Received | [email protected] |