CVE-2025-12739 Cross-Site Scripting (XSS) in Looker's Extension Loader leading to Admin Account Compromise

An attacker with viewer permissions in Looker could craft a malicious URL that, when opened by a Looker admin, would execute an attacker-supplied script. Exploitation required at least one Looker extension installed on the instance. Looker-hosted and Self-hosted were found to be vulnerable. This...