CVE-2026-7309 Openshift-controller-manager: openshift container platform: information disclosure via environment variable injection
A user with edit role can inject environment variables into build containers, leading to information disclosure of build traffic.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7309?
CVE-2026-7309 is a medium-severity vulnerability in Redhat Openshift Container Platform, published on 28 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-426
Which versions are affected by CVE-2026-7309?
It affects 1 product.
Products include Redhat Openshift Container Platform.
How do I fix CVE-2026-7309?
No fix has been published for CVE-2026-7309 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-7309 being exploited?
There is no known exploitation of CVE-2026-7309 in the wild and no public exploit code.
Other vulnerabilities in Redhat Openshift Container Platform
- CVE-2020-27836 Missing authorization in cluster-ingress-operator
- CVE-2018-1085 Misconfiguration in openshift-ansible
- CVE-2026-54099 Privilege escalation in Red Hat OpenShift Container Platform 4
- CVE-2026-1784 Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection
- CVE-2021-20182 Privilege escalation in openshift
Sources
Also known as GHSA-rgq5-8c8j-9wq5.