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CVE-2026-92543

HIGH 7.6

Published 2026-10-07 · Last modified 2026-10-07

Docker Engine classifies a registry hostname as insecure using an any-match DNS check. loadInsecureRegistries() injects 127.0.0.0/8 and ::1/128 as insecure CIDRs by default. isCIDRMatch resolves all of the hostname's addresses and returns true if a single address is in the insecure CIDR list. Because the transport re-dials the hostname rather than the CIDR-matching address, a DNS answer set of one loopback IP plus a non-loopback attacker IP disables certificate verification and enables HTTP fallback for the registry connection.

ELEVATED IMPACT

Severe if exploited (CVSS 7.6), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.1%chance of exploitation in 30 days · 0th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.6CVSS 4.0 · HIGH

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: Succeeds with passive user activity
  • ⚠Complexity: Needs a race window or specific setup
  • ⚠Requirements: Specific conditions must be present

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Docker Moby

Products Docker Engine Moby

Weakness (CWE)

  • CWE-295: : Improper Certificate Validation
  • CWE-319: : Cleartext Transmission of Sensitive Information

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References and research data (JSON)

Vendor product assessments

  • multicluster-engine/assisted-service-9-rhel9 as a component of Multicluster Engine for Kubernetes · known affected

    Vendor assessment for this product only.

    pkg:oci/assisted-service-9-rhel9@sha256:1c507481c2a7f0e00ae925bcc8e12d095abad392a53070a3b443337eda329cdf?repository_url=registry.redhat.io/multicluster-engine/assisted-service-9-rhel9

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub · known affected

    Vendor assessment for this product only.

    pkg:oci/multicluster-globalhub-grafana-rhel9@sha256:7092341d99cdb2da484f2770c94c48f0fc38e1c3f59c854ad7bdea0e6db8aa73?repository_url=registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9

    • no fix planned: Will not fix
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • rhceph/rhceph-5-dashboard-rhel8 as a component of Red Hat Ceph Storage 5 · known affected

    Vendor assessment for this product only.

    pkg:oci/rhceph-5-dashboard-rhel8@sha256:702714eaa9fa550ea459da4179a166151495dc98816d931fb0633c4116134499?repository_url=registry.redhat.io/rhceph/rhceph-5-dashboard-rhel8

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • rhceph/grafana-rhel9 as a component of Red Hat Ceph Storage 7 · known affected

    Vendor assessment for this product only.

    pkg:oci/grafana-rhel9@sha256:8bcb8976618246bc3c73f7986b7d566d9d26cda16c6043f6820f6efa2f8a3c2c?repository_url=registry.redhat.io/rhceph/grafana-rhel9

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • rhceph/grafana-rhel10 as a component of Red Hat Ceph Storage 9 · known affected

    Vendor assessment for this product only.

    pkg:oci/grafana-rhel10@sha256:b413d37ad30595df599c3aa8c7dbfad08acc6fa9a59e5300d6e66746d0ed7c92?repository_url=registry.redhat.io/rhceph/grafana-rhel10

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana-selinux as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana-selinux

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana.src as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana?arch=src

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana-selinux as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana-selinux

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • grafana.src as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/grafana?arch=src

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • openshift4/ose-agent-installer-api-server-rhel9 as a component of Red Hat OpenShift Container Platform 4 · known affected

    Vendor assessment for this product only.

    pkg:oci/ose-agent-installer-api-server-rhel9@sha256:32406c2a9e2b302944bc639d45bf43de079d6687c433a798e369c6438cd9519c?repository_url=registry.redhat.io/openshift4/ose-agent-installer-api-server-rhel9

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • openshift4/ose-console as a component of Red Hat OpenShift Container Platform 4 · known affected

    Vendor assessment for this product only.

    pkg:oci/ose-console@sha256:11cbddcade1efab227261b1ed0e064c78d85ae727b37e590d64cf8227c7ab41a?repository_url=registry.redhat.io/openshift4/ose-console

    • none available: Affected
    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:oci/acm-grafana-rhel9@sha256:aa7ca316ec068e466c4a413b83b3f24a26653dc2c63497a5f6f48a8cc44c36c7?repository_url=registry.redhat.io/rhacm2/acm-grafana-rhel9

    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00
  • openshift4/ose-agent-installer-api-server-rhel8 as a component of Red Hat OpenShift Container Platform 4 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:oci/ose-agent-installer-api-server-rhel8@sha256:b52498b6ba41b91c47af8f4e1fa25fb93ee7b09a489a52e243502c3953cd9140?repository_url=registry.redhat.io/openshift4/ose-agent-installer-api-server-rhel8

    Red Hat · CVE-2026-92543 · Updated 2026-10-15T04:09:46+00:00

All CVSS metrics

  • HIGH 7.6 v4.0 · CNA Primary
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  • HIGH 7.6 v4.0 · NVD Secondary
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS