Vulnerability · Published Apr 28, 2026 · Assigned by redhat

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

Medium 4.3

In plain English

A medium-severity security flaw in Red Hat OpenShift Container Platform 4 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 92.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Red Hat OpenShift Container Platform 4	see references

Weakness: CWE-426 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://access.redhat.com/security/cve/CVE-2026-7309 vdb-entry, x_refsource_REDHAT
RHBZ#2463451 issue-tracking, x_refsource_REDHAT