Distribution Project Distribution vulnerabilities

1 vulnerability

Known vulnerabilities in Distribution Project Distribution, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

PrioritiseCVE-2026-33540distribution +80 moreDistribution affected by pull-through cache credential exfiltration via www-authenticate bearer realmDistribution 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.CVSS7.5HighEPSS0.29%