High7.4Red Hat Linux Updated

High [CVE-2026-50237] Namespace tenant SSRF with egress bypass, catalog poisoning, and admin-mediated supply chain escalation via ProjectHelmChartRepository in OpenShift Console

This high-severity Red Hat Linux advisory covers CVE-2026-50237 affecting Red Hat OpenShift Container Platform 4.

CVE-2026-50237 Published Aug 11, 2026Updated by vendor Aug 11, 2026

CVE-2026-50237

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

A Server-Side Request Forgery and supply chain flaw was found in the OpenShift Console Helm catalog proxy. A namespace tenant can plant a ProjectHelmChartRepository with an arbitrary URL that the console pod fetches server-side, bypassing tenant egress restrictions.

Combined with catalog metadata poisoning and admin-mediated chart installation, this enables privilege escalation. Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L).

Weakness: CWE-918. Affected Red Hat products: Red Hat OpenShift Container Platform 4.

Red Hat does not currently list a fixing RHSA for this CVE.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Review existing ProjectHelmChartRepository resources in tenant namespaces for unexpected URLs using: oc get projecthelmchartrepositories --all-namespaces -o jsonpath='{range .items[*]}{.metadata.namespace}/{.metadata.name}: {.spec.connectionConfig.url}{"\n"}{end}'. Apply NetworkPolicy egress restrictions to the openshift-console namespace (note: requires allow-listing required console egress targets). Administrators should verify chart provenance before installing Helm charts from namespace-scoped repositories. Disable or restrict ProjectHelmChartRepository creation via RBAC if namespace tenants do not require custom Helm repositories.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory article fetched and its advisory identity was verified before publication. identity-sha256=4bb7838764a3e42f77c9af5a002b35f4fa919a34d0ca38a08b65c4b8c3b36500
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-50237NVD CVE.org MITRE

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