Medium severity · published Apr 28, 2026
CVE-2026-7309
Openshift-controller-manager: openshift container platform: information disclosure via environment variable injection
4.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
OC
Openshift Container Platform · Redhat
4.0 · source: NVD
Affected product
RH
Red Hat OpenShift Container Platform 4
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7309
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7309
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-7309
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2463451
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