CVE-2026-29954

Name: CVE-2026-29954
Creator: NVD / NIST
Published: 2026-03-30T17:16:15.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.6/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2026-29954 is a high-severity vulnerability rated 7.6/10 on the CVSS scale. 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. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.6/10

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

EPSS Probability

0.27%

18.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cloudark	Kubeplus	4.1.4

References

https://gist.github.com/b0b0haha/33baea60fd2a847f11f1fb02e43c64c0Exploit, Mitigation, Third Party Advisory
https://github.com/b0b0haha/CVE-2026-29954/blob/main/README.mdExploit, Mitigation, Third Party Advisory

Timeline

Published: Mar 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-29954?

How severe is CVE-2026-29954?

CVE-2026-29954 has a CVSS score of 7.6/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2026-29954?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-29954?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST