Apple has released security update for Safari to address multiple vulnerabilities. A remote attacker could exploit these vulnerabilities (CVE-2021-30887, CVE-2021-30888, CVE-2021-30889, CVE-2021-30890) to trigger cross-site scripting, sensitive information disclosure, remote code execution and security restriction bypass on the affected system.

More information on vulnerabilities and update is available in the Apple security advisory – Safari 15.1.