A cookie management issue was addressed with improved state management.

iOS 18.1.1 and iPadOS 18.1.1
Released November 19, 2024

• JavaScriptCore
  Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, and iPad mini 5th generation and later
  Impact: 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 on Intel-based Mac systems.
  Description: The issue was addressed with improved checks.
  WebKit Bugzilla: 283063
  CVE-2024-44308: Clément Lecigne and Benoît Sevens of Google's Threat Analysis Group
• WebKit
  Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, and iPad mini 5th generation and later
  Impact: Processing maliciously crafted web content may lead to a cross site scripting attack. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.
  Description: A cookie management issue was addressed with improved state management.
  WebKit Bugzilla: 283095
  CVE-2024-44309: Clément Lecigne and Benoît Sevens of Google's Threat Analysis Group