Apple Safari 26.6: Visited Link Exposure via Referral Check
CVE-2026-64713 Published on July 27, 2026
This issue was addressed with improved checks. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Websites may know if the user has visited a given link.
Vulnerability Analysis
CVE-2026-64713 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a Side Channel Attack Vulnerability?
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. Discrepancies can take many forms, and variations may be detectable in timing, control flow, communications such as replies or requests, or general behavior. These discrepancies can reveal information about the product's operation or internal state to an unauthorized actor. In some cases, discrepancies can be used by attackers to form a side channel.
CVE-2026-64713 has been classified to as a Side Channel Attack vulnerability or weakness.
Products Associated with CVE-2026-64713
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Affected Versions
Apple Safari:- Before 26.6 is affected.
- Before 26.6 is affected.
- Before 26.6 is affected.
- Before 26.6 is affected.
- Before 26.6 is affected.
- Before 26.6 is affected.