Chrome Prefetch Discrepancy Leaks CORS via Crafted Page (Pre-153.0.8010.36)
CVE-2026-87619 Published on September 9, 2026
Observable discrepancy in Prefetch in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
Vulnerability Analysis
CVE-2026-87619 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 small impact on confidentiality, a small impact on integrity and 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-2026-87619 has been classified to as a Side Channel Attack vulnerability or weakness.
Products Associated with CVE-2026-87619
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Affected Versions
Google Chrome:- Version 153.0.8010.36 and below 153.0.8010.36 is affected.