CVE-2026-29954

HIGH 7.6CVE-2026-29954 · Published 30/03/2026 · updated 17/06/2026

In short

CVE-2026-29954 is a HIGH (CVSS 7.6) vulnerability affecting kubeplus (cloudark).
Chance of exploitation in the next 30 days (EPSS): 0.28%, higher than 20.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
kubeplus cloudark	`= 4.1.4`	No fix yet

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.

References

gist.github.com/b0b0haha/33baea60fd2a847f11f1fb02e43c64c0 · Exploit
b0b0haha/CVE-2026-29954 · Exploit

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