Is CVE-2026-7309 actively exploited?

No active exploitation of CVE-2026-7309 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-7309 be exploited remotely?

Yes. CVE-2026-7309 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-7309?

CVE-2026-7309 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-7309

CWE-426Published: April 28, 2026· Updated: Apr 28, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.6th

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.

NVD Source

Technical Analysis

CVE-2026-7309 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.