Acknowledged
Created: Oct 23, 2026
Updated: Oct 27, 2026
Resolved Date: Oct 23, 2026
Found In Version: 10.22.33.2
Severity: Standard
Applicable for: Wind River Linux LTS 22
Component/s: Userspace
Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used without validating that it matches the upstream registry host. As a result, an attacker-controlled upstream (or an attacker with MitM position to the upstream) can cause distribution to send the configured upstream credentials via basic auth to an attacker-controlled realm URL. This vulnerability is fixed in 3.1.0.
Data source: GitHub, Inc. (security-advisories@github.com)
