[$TBD][1000934] Critical CVE-2019-13685: Use-after-free in UI. Reported by Khalil Zhani on 2019-09-05 [$20000][995964] High CVE-2019-13688: Use-after-free in media. Reported by Man Yue Mo of Semmle Security Research Team on 2019-08-20 [$20000][998548] High CVE-2019-13687: Use-after-free in media. Reported by Man Yue Mo of Semmle Security Research Team on 2019-08-28 [$TBD][1000002] High CVE-2019-13686: Use-after-free in offline pages. Reported by Brendon Tiszka on 2019-09-02