CVE-2026-7309 MEDIUM

CVE-2026-7309: Openshift-controller-manager: openshift container platform: information disclosure via environment variable injection

Vendor Red Hat
Product Red Hat OpenShift Container Platform 4
Weakness CWE-426
Published April 28, 2026
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in the OpenShift Container Platform build system. A user with the `edit` ClusterRole can inject arbitrary environment variables, such as `LD_PRELOAD` or `http_proxy`, into `docker-build` containers through the `buildconfigs/instantiate` API. This incomplete fix for a previous vulnerability allows for information disclosure, specifically impacting the confidentiality of build traffic.

Key dates

02Disclosure timeline

April 28, 2026 CVE published
April 28, 2026 Record updated