Arbitrary Environment Variable Injection in OpenShift Container Platform by Red Hat
CVE-2026-7309

4.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Container Platform 4
Vendor
CVE Published:
28 April 2026

What is CVE-2026-7309?

A vulnerability has been identified in the OpenShift Container Platform's build system that allows a user with the edit ClusterRole to inject arbitrary environment variables into docker-build containers. This occurs via the buildconfigs/instantiate API, potentially compromising the confidentiality of build traffic by disclosing sensitive information. The flaw represents an incomplete remediation of a prior vulnerability, emphasizing the importance of continuous monitoring and updating of security measures.

References

https://access.redhat.com/security/cve/CVE-2026-7309
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2463451
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Rohit Sanjay Khandke for reporting this issue.
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