Several vulnerabilities have been discovered in the libwebkit2gtk-4.0-37 web engine: CVE-2019-8644 G. Geshev discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8649 Sergei Glazunov discovered an issue that may lead to universal cross site scripting. CVE-2019-8658 akayn discovered an issue that may lead to universal cross site scripting. CVE-2019-8666 Zongming Wang and Zhe Jin discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8669 akayn discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8671 Apple discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8672 Samuel Gross discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8673 Soyeon Park and Wen Xu discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8676 Soyeon Park and Wen Xu discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8677 Jihui Lu discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8678 An anonymous researcher, Anthony Lai, Ken Wong, Jeonghoon Shin, Johnny Yu, Chris Chan, Phil Mok, Alan Ho, and Byron Wai discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8679 Jihui Lu discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8680 Jihui Lu discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8681 G. Geshev discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8683 lokihardt discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8684 lokihardt discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8686 G. Geshev discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8687 Apple discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8688 Insu Yun discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8689 lokihardt discovered memory corruption issues that can lead to arbitrary code execution. CVE-2019-8690 Sergei Glazunov discovered an issue that may lead to universal cross site scripting. You can see more details on the WebKitGTK and WPE WebKit Security Advisory WSA-2019-0004.