SSRF in Cloudark Kubeplus
CVE-2026-29954
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Cloudark Kubeplus — versions 4.1.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/b0b0haha/33baea60fd2a847f11f1fb02e43c64c0 (Exploit, Third Party Advisory, Mitigation)
- github.com/b0b0haha/CVE-2026-29954/blob/main/README.md (Exploit, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2026-29954?
- CVE-2026-29954 is a high-severity vulnerability in Cloudark Kubeplus, classified under Argument Injection. CVSS score: 7.6/10. Published 2026-03-30.
- How severe is CVE-2026-29954?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2026-29954 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.