This vulnerability was used along with CVE-2019-11707 in a targeted attack against Conbase.
Oracle has released a security alert, notifying users on in the wild exploitation of the vulnerability.
The vulnerability was reported by Mozilla to be actively exploited in the wild.
This vulnerability as reportedly used in a targeted attack against Coinbase employees on Monday, June 17 2019.
The vulnerability was used in conjunction with another sandbox bypass issue CVE-2019-11708, patched by Mozilla on June 20, 2019.
This vulnerability was independently discovered and reported to Mozilla by a security researcher Samuel Groß on April 15. It took Mozilla 64 days to issue a security fix.
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