CVE-2026-7309

MEDIUMNVD 4.34.3—

4.3

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 v3: 4.3
EG Score: 4.3(high)
EPSS: 9.2%
KEV: Not listed

Published

April 28, 2026

Last Modified

May 7, 2026

Advisory Details (2)

Auto-updated May 7, 2026

Patch available. Sources: redhat.

redhat

2463451 – (CVE-2026-7309) CVE-2026-7309 openshift-controller-manager: OpenShift Container Platform: Information disclosure via environment variable injection

https://bugzilla.redhat.com/show_bug.cgi?id=2463451

redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-7309

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-426Untrusted Search Path

Data Freshness Timeline

(refreshed 9× in last 7d / 14× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 15:19 UTCEG score recompute
2026-05-20 15:19 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-7309?

CVE-2026-7309 is a medium vulnerability published on April 28, 2026. A flaw was found in the OpenShift Container Platform build system. A user with the edit ClusterRole can inject arbitrary environment variables, such as LDPRELOAD or httpproxy, into docker-build containers through the buildconfigs/instantiate API. This incomplete fix for a previous vulnerability…

When was CVE-2026-7309 disclosed?

CVE-2026-7309 was first published in the National Vulnerability Database on April 28, 2026, with the most recent update on May 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-7309 actively exploited?

CVE-2026-7309 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2026-7309 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2026-7309?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7309, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-7309

📅 Published

🔄 Last Modified

📋 Advisory Details (2)