CVE-2026-96577
Received Received - Intake

oc-mirror Local Cache Registry Network Exposure Vulnerability

Publication date: 2026-10-01

Last updated on: 2026-10-01

Assigner: redhat-SADP

Description
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.

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Meta Information

Published
2026-10-01
Last Modified
2026-10-01
Generated
2026-10-01
AI Q&A
2026-10-01
EPSS Evaluated
N/A
NVD
CVE-2026-96577
EUVD
EUVD-2026-90590

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
red_hat oc-mirror to 4.21 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

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Executive Summary

This vulnerability affects the oc-mirror tool in OpenShift Container Platform. During mirroring operations, the embedded local cache registry binds to all network interfaces without authentication or encryption. An unauthenticated attacker on the same network can connect to this exposed service and push tampered container images, delete cached images, or access mirrored content.

Detection Guidance

Check if oc-mirror is running and listening on all network interfaces by using commands like 'ss -tulnp | grep 55000' or 'netstat -tulnp | grep 55000'. Inspect the oc-mirror configuration files for registry settings that bind to 0.0.0.0 or [::] without authentication.

Impact Analysis

An attacker could manipulate container images in the cache, leading to supply-chain attacks. They might delete critical cached images, disrupt mirroring operations, or steal mirrored content. Since the registry lacks encryption, sensitive data could be intercepted during transmission.

Compliance Impact

This vulnerability may violate compliance requirements for data integrity and confidentiality. GDPR requires protecting personal data, while HIPAA mandates safeguarding health information. Unauthorized access to mirrored content could lead to data breaches, resulting in legal and financial penalties.

Mitigation Strategies

Apply the available security update for oc-mirror as soon as it is released. Until then, avoid using oc-mirror in environments where unauthenticated adjacent network access is possible. Monitor network traffic for unauthorized connections to port 55000.

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