The following vulnerabilities have been discovered in the libwebkit2gtk-4.0-dev web engine: CVE-2021-21775 Marcin Towalski discovered that a specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage. CVE-2021-21779 Marcin Towalski discovered that a specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage. CVE-2021-30663 An anonymous researcher discovered that processing maliciously crafted web content may lead to arbitrary code execution. CVE-2021-30665 yangkang discovered that processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. CVE-2021-30689 An anonymous researcher discovered that processing maliciously crafted web content may lead to universal cross site scripting. CVE-2021-30720 David Schutz discovered that a malicious website may be able to access restricted ports on arbitrary servers. CVE-2021-30734 Jack Dates discovered that processing maliciously crafted web content may lead to arbitrary code execution. CVE-2021-30744 Dan Hite discovered that processing maliciously crafted web content may lead to universal cross site scripting. CVE-2021-30749 An anonymous researcher discovered that processing maliciously crafted web content may lead to arbitrary code execution. CVE-2021-30758 Christoph Guttandin discovered that processing maliciously crafted web content may lead to arbitrary code execution. CVE-2021-30795 Sergei Glazunov discovered that processing maliciously crafted web content may lead to arbitrary code execution. CVE-2021-30797 Ivan Fratric discovered that processing maliciously crafted web content may lead to code execution. CVE-2021-30799 Sergei Glazunov discovered that processing maliciously crafted web content may lead to arbitrary code execution.