CVE-2026-29954

7.6 highEPSS 0.3%

High (7.6) in cloudark kubeplus. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.6 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWEs: CWE-88, CWE-918
Published: 2026-03-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cloudark:kubeplus

References

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

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