Missing authentication in Red Hat OpenShift Container Platform 4.18
Priority LOW 30CWE-306Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Partial Red Hat: 5 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-306.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00133 2nd percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 5 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat OpenShift Container Platform 4.18 | — | 1790828598 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — | 1790778095 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.20 | — | 1790782357 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.21 | — | 1790777129 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.22 | — | 1790775357 | Patch available | CNA |
| Red Hat | Assisted Installer for Red Hat OpenShift Container Platform 2 | — | — | No fix listed | CNA |
- Red Hat OpenShift Container Platform 4.18 VendorRed Hat Affected — Fixed in 1790828598 Patch available CNA
- Red Hat OpenShift Container Platform 4.19 VendorRed Hat Affected — Fixed in 1790778095 Patch available CNA
- Red Hat OpenShift Container Platform 4.20 VendorRed Hat Affected — Fixed in 1790782357 Patch available CNA
- Red Hat OpenShift Container Platform 4.21 VendorRed Hat Affected — Fixed in 1790777129 Patch available CNA
- Red Hat OpenShift Container Platform 4.22 VendorRed Hat Affected — Fixed in 1790775357 Patch available CNA
- Assisted Installer for Red Hat OpenShift Container Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:openshift:4.18::el9 | 4.18 | — | Red Hat |
| cpe:/a:redhat:openshift:4.19::el9 | 4.19 | — | Red Hat |
| cpe:/a:redhat:openshift:4.20::el9 | 4.20 | — | Red Hat |
| cpe:/a:redhat:openshift:4.21::el9 | 4.21 | — | Red Hat |
| cpe:/a:redhat:openshift:4.22::el9 | 4.22 | — | Red Hat |
| cpe:/a:redhat:assisted_installer:2 | 2 | — | Red Hat |
- cpe:/a:redhat:openshift:4.18::el9 Versions 4.18 — ·Red Hat
- cpe:/a:redhat:openshift:4.19::el9 Versions 4.19 — ·Red Hat
- cpe:/a:redhat:openshift:4.20::el9 Versions 4.20 — ·Red Hat
- cpe:/a:redhat:openshift:4.21::el9 Versions 4.21 — ·Red Hat
- cpe:/a:redhat:openshift:4.22::el9 Versions 4.22 — ·Red Hat
- cpe:/a:redhat:assisted_installer:2 Versions 2 — ·Red Hat
Remediation
Red Hat 5 advisories
- RHSA-2026:79039 Released 2026-10-15 · Red Hat rating ImportantOpenShift Container Platform 4.18.57 bug fix and security update
- Red Hat OpenShift Container Platform 4.18 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-agent-installer-node-agent-rhel9 +18
- RHSA-2026:74434 Released 2026-10-07 · Red Hat rating ImportantOpenShift Container Platform 4.19.50 bug fix and security update
- Red Hat OpenShift Container Platform 4.19 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-baremetal-installer-rhel9 +7
- RHSA-2026:74380 Released 2026-10-06 · Red Hat rating ImportantOpenShift Container Platform 4.20.41 bug fix and security update
- Red Hat OpenShift Container Platform 4.20 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9 +12
Show 2 more Red Hat advisories
- RHSA-2026:74429 Released 2026-10-06 · Red Hat rating ImportantOpenShift Container Platform 4.22.17 bug fix and security update
- Red Hat OpenShift Container Platform 4.22 registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9, registry.redhat.io/openshift4/ose-aws-cluster-api-controllers-rhel9 +15
- RHSA-2026:74383 Released 2026-10-06 · Red Hat rating ImportantOpenShift Container Platform 4.21.36 bug fix and security update
- Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9 +12
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Assisted Installer for Red Hat OpenShift Container Platform 2 | Affected | — |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:79039 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:74434 |
| Red Hat OpenShift Container Platform 4.20 | Fixed | RHSA-2026:74380 |
| Red Hat OpenShift Container Platform 4.21 | Fixed | RHSA-2026:74383 |
| Red Hat OpenShift Container Platform 4.22 | Fixed | RHSA-2026:74429 |
Not affected: 5 products
- Red Hat OpenShift Container Platform 4.18
- Red Hat OpenShift Container Platform 4.19
- Red Hat OpenShift Container Platform 4.20
- Red Hat OpenShift Container Platform 4.21
- Red Hat OpenShift Container Platform 4.22
Timeline
- 2026-10-02 Threatist record created from CVE-2026-96577
- 2026-10-03 Alias added: GHSA-gh86-jqm4-pwg7
- 2026-10-06 CISA SSVC decision points changed
- 2026-10-06 Fix available: RHSA-2026:74429 · Red Hat
- 2026-10-06 Fix available: RHSA-2026:74383 · Red Hat
- 2026-10-06 Fix available: Red Hat OpenShift Container Platform 4.21, Red Hat OpenShift Container Platform 4.22 · Red Hat
- 2026-10-06 Fix available: openshift4/oc-mirror-plugin-rhel9@1790775357, openshift4/oc-mirror-plugin-rhel9@1790777129 · CNA
- 2026-10-06 2 new references · CNA
- 2026-10-07 Fix available: openshift4/oc-mirror-plugin-rhel9@1790782357 · CNA
- 2026-10-07 1 new reference · CNA
- 2026-10-07 Fix available: RHSA-2026:74380 · Red Hat
- 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.20 · Red Hat
- 2026-10-07 Fix available: openshift4/oc-mirror-plugin-rhel9@1790778095 · CNA
- 2026-10-07 1 new reference · CNA
- 2026-10-07 Fix available: RHSA-2026:74434 · Red Hat
- 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.19 · Red Hat
- 2026-10-16 Fix available: openshift4/oc-mirror-plugin-rhel9@1790828598 · CNA
- 2026-10-16 1 new reference · CNA
- 2026-10-16 Fix available: RHSA-2026:79039 · Red Hat
- 2026-10-16 Fix available: Red Hat OpenShift Container Platform 4.18 · Red Hat
References
More Red Hat vulnerabilities
- TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
- TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-96577 · CVE Program
- CVE-2026-96577 · NVD
- FIRST EPSS
- GHSA-gh86-jqm4-pwg7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-96577 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences