# CVE-2026-96577: Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without authentication, with delete enabled

Status: published. Published: 2026-10-01. Updated: 2026-11-11.

A flaw was found in oc-mirror. During mirroring operations, the embedded local cache registry binds to all network interfaces without authentication or encryption instead of restricting access to the local system. An unauthenticated attacker on an adjacent network can connect to the exposed service to push tampered container images, delete cached images, or access mirrored content.

## Remediation

- workaround: Red Hat has not identified any known mitigations for this issue. Customers are advised to apply the available security update when released. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat OpenShift Container Platform 4.18 (openshift4/oc-mirror-plugin-rhel9): ≥ 1790828598; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 4.19 (openshift4/oc-mirror-plugin-rhel9): ≥ 1790778095; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 4.20 (openshift4/oc-mirror-plugin-rhel9): ≥ 1790782357; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 4.21 (openshift4/oc-mirror-plugin-rhel9): ≥ 1790777129; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 4.22 (openshift4/oc-mirror-plugin-rhel9): ≥ 1790775357; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Assisted Installer for Red Hat OpenShift Container Platform 2 (assisted/agent-preinstall-image-builder-rhel9): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 5 (openshift5/oc-mirror-plugin-rhel9): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 7.1 (high); CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.13% as of 2026-11-10; percentile 2.88%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-306

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:74380 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74383 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74429 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74434 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:79039 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-96577 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2523077 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-96577; retrieved 2026-11-11; source updated 2026-11-11

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-96577; retrieved 2026-11-11; source updated Not reported

Revision: 0a53ac71f1125d86e44af9f2fb428ba0513bb6f47916e23cb00ff2a01a550ca7

Canonical: https://y2.dev/cve/CVE-2026-96577

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