CVE-2026-92543

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/moby/moby/security/advisories/GHSA-7cfq-22r6-qp73

Configurations

No configuration.

History

07 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-07 17:17

Updated : 2026-10-08 20:46

NVD link : CVE-2026-92543

Mitre link : CVE-2026-92543

CVE.ORG link : CVE-2026-92543

JSON object : View

Products Affected

No product.

CWE

CWE-295

Improper Certificate Validation

CWE-319

Cleartext Transmission of Sensitive Information

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