Security Advisory
CVE-2019-9813
8.8
HIGH
Vulnerability Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Published Date
April 26, 2019
Official Source
NIST NVD Advisory