CVE-2016-9075: Mozilla: WebExtensions can access the mozAddonManager API and use it to gain elevated privileges (MFSA 2016-89)

Severity: Critical

CVSS Score: 9.8

An issue where WebExtensions can use the mozAddonManager API to elevate privilege due to privileged pages being allowed in the permissions list. This allows a malicious extension to then install additional extensions without explicit user permission. This vulnerability affects Firefox < 50.