CVE-2014-5277: Docker

Medium severity, CVSS 5.0. EPSS: 1.9% chance of exploitation in the next 30 days.

Docker before 1.3.1 and docker-py before 0.5.3 fall back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.

Affected products

• Docker Docker: up to and including 1.3.0
• Docker Docker-Py: up to and including 0.5.3

Published 2014-11-17. Last modified 2026-06-17.