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Vulnerability record · CVE-2026-29954 · published 30 March 2026

CVE-2026-29954: Cloudark kubeplus argument injection vulnerability

Cloudark · Kubeplus

In KubePlus 4.1.4, the mutating webhook and kubeconfiggenerator components have an SSRF vulnerability when processing the chartURL field of ResourceComposition resources. The field is only URL-encoded without validating the target address. More critically, when kubeconfiggenerator uses wget to download charts, the chartURL is directly concatenated into the command, allowing attackers to inject wget's `--header` option to achieve arbitrary HTTP header injection.

7.6 CVSS 3.1 High EPSS 0.39% · top 69.0% CWE-88 · Argument injectionCWE-918 · Server-side request forgery (SSRF)
7.6CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In KubePlus 4.1.4, the mutating webhook and kubeconfiggenerator components have an SSRF vulnerability when processing the chartURL field of ResourceComposition resources. The field is only URL-encoded without validating the target address. More critically, when kubeconfiggenerator uses wget to download charts, the chartURL is directly concatenated into the command, allowing attackers to inject wget's `--header` option to achieve arbitrary HTTP header injection.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/b0b0haha/33baea60fd2a847f11f1fb02e43c64c0 ExploitMitigationThird Party Advisory
https://github.com/b0b0haha/CVE-2026-29954/blob/main/README.md ExploitMitigationThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-29954), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.