Mozilla Firefox for iOS could provide weaker than expected security. The IndexedDB is not cleared when leaving private browsing mode, caused by the failure to use the API for WKWebViewConfiguration and the requirement of the private instance of this object be deleted when leaving private mode. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to launch further attacks on the system.
Mozilla Firefox for iOS 26
Update to latest version of IOS for Firefox 27.