CVE-2026-92543
Published:October 07, 2026
Updated:October 09, 2026
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.
Affected Packages
https://github.com/moby/moby.git (GITHUB):
Affected version(s) >=v2.0.0-beta.0 <v2.0.0-beta.25Fix Suggestion:
Update to version v2.0.0-beta.25https://github.com/moby/moby.git (GITHUB):
Affected version(s) >=docker-v29.0.0-rc.1 <docker-v29.8.2Fix Suggestion:
Update to version docker-v29.8.2github.com/moby/moby/v2 (GO):
Affected version(s) >=v2.0.0-beta.0 <v2.0.0-beta.25Fix Suggestion:
Update to version v2.0.0-beta.25Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.09