CVE-2026-92543
Docker Engine insecure-registry fallback via malicious DNS responses
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 CWE-319 |
| Vendor | docker |
| Product | docker engine |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 7, 2026 |
Stay Ahead of the Next One
Get instant alerts for docker docker engine
Be the first to know when new unknown vulnerabilities affecting docker docker engine are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Docker / Docker Engine
0 < 29.8.2
Moby / Moby
0 < v2.0.0-beta.25
References
Credits
Adam Korczynski of ADA Logics