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.

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Fixes

Solution

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Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Wed, 29 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform

Wed, 29 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 28 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
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.
Title Openshift-controller-manager: openshift container platform: information disclosure via environment variable injection
First Time appeared Redhat
Redhat openshift
Weaknesses CWE-426
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat openshift
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-28T13:32:18.056Z

Reserved: 2026-04-28T12:24:35.368Z

Link: CVE-2026-7309

cve-icon Vulnrichment

Updated: 2026-04-28T13:32:14.883Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-28T13:19:24.847

Modified: 2026-04-28T20:23:20.703

Link: CVE-2026-7309

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-28T00:00:00Z

Links: CVE-2026-7309 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-29T10:00:09Z

Weaknesses