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Source：Miracle Information Network Editor：Games Time：2025-06-26 03:28:41

A vulnerability in Safari992 Archivesbe exploited to expose your browser history — and possibly elements of your identity.

Revealed in a Saturday blog post by FingerprintJS, the bug was introduced to Safari 15 via the Indexed Database API(IndexedDB), which is part of Apple's WebKitweb browser development engine. To put it simply, IndexedDB can be used to save data on your computer such as websites you've visited, making them load quicker when you return to them later.

IndexedDB also usually follows the same-origin policysecurity mechanism, which doesn't let websites freely interact with each other unless they have the same domain name (among other requirements). Think of it like being in quarantine and only being allowed to hang out with members of your household. So for example, Netflix can't access IndexedDB's saved data to find out you've been cheating on them with YouTube.

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Unfortunately, the bug revealed by FingerprintJS causes IndexedDB to violate the same-origin policy, exposing data it has collected to websites it didn't collect it from. Even worse, some websites such as those in Google's network use unique user-specific identifiers in the data provided to IndexedDB. This means that, if you're logged into your Google account, the collected data can be used to precisely identify both your browsing history and details of your account. And if you're logged into more than one account, it can figure that out too.

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"Not only does this imply that untrusted or malicious websites can learn a user’s identity, but it also allows the linking together of multiple separate accounts used by the same user," wrote FingerprintJS. They also released a demonstrationshowing the type of information the exploit can reveal.

FingerprintJS reported the bugat the end of last November, but Apple still hasn't fixed it. Mashable has reached out to Apple for comment.

All of this is concerning, but there isn't much you can do about it right now. Browsing in Safari's Private mode can mitigate the potential damage, since a private tab can't tell what's going on in any other tabs regardless of whether they're private or public. However it still isn't foolproof.

"[I]f you visit multiple different websites within the same [private] tab, all databases these websites interact with are leaked to all subsequently visited websites," wrote FingerprintJS.

Mac users can avoid the vulnerability by switching from Safari to a different browser, but people on iOS or iPadOS are out of luck. While only Safari has been impacted on Mac, Apple's requirement that all iOS and iPad web browsers use WebKit means the IndexedDB bug has impacted every browser on these systems. The best we can do is either wait for Apple to come out with a patch, switch to an Android, or just log off.

Topics Apple Cybersecurity

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