CVE-2026-7309

MEDIUM

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

Title source: cna

Description

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.

References (2)

Core 2

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-7309

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2463451

https://bugzilla.redhat.com/show_bug.cgi?id=2463451

Scores

CVSS v3 4.3

EPSS 0.0018

EPSS Percentile 7.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-426

Status published

Products (2)

Red Hat/Red Hat OpenShift Container Platform 4

redhat/openshift_container_platform 4.0

Published Apr 28, 2026

Tracked Since Apr 28, 2026