Use-After-Free Vulnerability in AssertWorkerThread with Shared Workers in Firefox < 67

CVE-2019-9821 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

A use-after-free vulnerability can occur in AssertWorkerThread due to a race condition with shared workers. This results in a potentially exploitable crash. This vulnerability affects Firefox < 67.

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