Is this vulnerability remotely exploitable?

It can be, depending on who can create or modify `ResourceComposition` resources. If an attacker has remote access to the Kubernetes API (directly or via a compromised service account) and can supply crafted `chartURL` values, they can exploit the SSRF and command injection behavior through normal API interactions.

What level of access does an attacker need to exploit this?

The attacker needs sufficient privileges to create or update `ResourceComposition` objects processed by KubePlus. This may be cluster-admin in locked-down environments, but in multi-tenant clusters it could be any tenant or controller granted rights to manage these resources.

What is the safest general fix pattern for this issue?

The most robust fix is to remove shell-based `wget` usage for chart downloads and replace it with a safe HTTP client that takes a validated URL as a parameter, combined with strict URL allowlisting and network policy restrictions. This simultaneously eliminates command-line option injection and reduces SSRF exposure.

Severity:

HIGH RISK

(7.6)

Command Injection & SSRF (CWE-88, CWE-918) via chartURL in KubePlus ResourceComposition

CVE-2026-29954

Published:

Mar 30, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Command Injection and Server-Side Request Forgery (SSRF)

CWE:

CWE-88;CWE-918

Impact:

Internal network access via SSRF and command injection into wget options

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Command Injection and Server-Side Request Forgery (SSRF)

CWE:

CWE-88;CWE-918

Impact:

Internal network access via SSRF and command injection into wget options

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

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Command Injection & SSRF (CWE-88, CWE-918) via chartURL in KubePlus ResourceComposition

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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