CVE-2026-12566: Black Lantern Security Bbot

Low severity, CVSS 3.1. EPSS: 0.2% chance of exploitation in the next 30 days.

The docker_pull module uses the realm parameter from a Docker registry's WWW-Authenticate response header as the authentication endpoint without validation. An attacker in a man-in-the-middle position between bbot and a Docker registry could modify this header to redirect the authentication request to an arbitrary endpoint, potentially leaking authentication tokens.

Affected products

• Black Lantern Security Bbot: from 2.0.0, up to and including 2.8.4

Published 2026-06-17. Last modified 2026-06-22.