Locale& Document::getCachedLocale(const AtomicString& locale)
{
    AtomicString localeKey = locale;
    if (locale.isEmpty() || !RuntimeEnabledFeatures::langAttributeAwareFormControlUIEnabled())
        return Locale::defaultLocale();
    LocaleIdentifierToLocaleMap::AddResult result = m_localeCache.add(localeKey, nullptr);
    if (result.isNewEntry)
        result.storedValue->value = Locale::create(localeKey);
    return *(result.storedValue->value);
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.