A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 15.3 and iPadOS 15.3, watchOS 8.4, tvOS 15.3, Safari 15.3, macOS Monterey 12.2. Processing a maliciously crafted mail message may lead to running arbitrary javascript.
seclists.org/fulldisclosure/2022/May/33
seclists.org/fulldisclosure/2022/May/35
security.gentoo.org/glsa/202208-39
support.apple.com/en-us/HT213053
support.apple.com/en-us/HT213054
support.apple.com/en-us/HT213057
support.apple.com/en-us/HT213058
support.apple.com/en-us/HT213059
support.apple.com/kb/HT213185
support.apple.com/kb/HT213255
support.apple.com/kb/HT213256