CVE-2026-92543 Docker Engine - Authentication Bypass

Docker Engine contains a broken authentication caused by insecure DNS-based registry hostname classification, letting attackers bypass certificate verification and enable HTTP fallback, exploit requires attacker to control DNS responses.

CVSS base score 7.6 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.09% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Man In The Middle
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/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
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-295

Vendor fix

Update to the latest Docker Engine version with improved registry hostname validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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