CVE-2026-29954

HIGH

KubePlus 4.1.4 - SSRF

Title source: llm

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.

Exploits (1)

nomisec WORKING POC
by b0b0haha · poc
https://github.com/b0b0haha/CVE-2026-29954

References (2)

Scores

CVSS v3 7.6
EPSS 0.0004
EPSS Percentile 11.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-88 CWE-918
Status published
Products (2)
cloudark/kubeplus 4.1.4
n/a/n/a
Published Mar 30, 2026
Tracked Since Mar 30, 2026