CVE-2026-87619

Analyzed Analyzed - Analysis Complete

Chrome Prefetch Data Leak Vulnerability

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description

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)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-09

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87619

EUVD

EUVD-2026-74436

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-203	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.

Attack-Flow Graph

Executive Summary

This vulnerability involves an observable discrepancy in the Prefetch feature of Google Chrome versions before 153.0.8010.36. A remote attacker could exploit this by crafting a malicious HTML page to leak cross-origin data, meaning sensitive information from one website could be accessed by another.

Detection Guidance

This vulnerability is specific to Google Chrome's Prefetch feature and requires detecting discrepancies in cross-origin data handling. Since it involves a browser-level issue, detection would typically involve monitoring Chrome's behavior or network traffic for unusual data leaks. No direct commands are provided in the context, but you could inspect Chrome's network activity or use security tools to detect unexpected data transmission from crafted HTML pages.

Impact Analysis

If you use an affected version of Chrome, this vulnerability could allow attackers to steal sensitive data from other websites you visit, such as session tokens, personal details, or other confidential information, without your knowledge.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, potentially violating GDPR's data protection principles or HIPAA's requirements for safeguarding protected health information. Organizations may face compliance risks if user data is leaked due to this issue.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the vulnerability.

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