CVE-2026-78955
Analyzed Analyzed - Analysis Complete

Performance API Discrepancy in Google Chrome

Publication date: 2026-08-25

Last updated on: 2026-08-31

Assigner: Chrome

Description
Observable discrepancy in PerformanceAPIs in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

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Meta Information

Published
2026-08-25
Last Modified
2026-08-31
Generated
2026-09-15
AI Q&A
2026-08-26
EPSS Evaluated
2026-09-13
NVD
CVE-2026-78955

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 152.0.7977.65 (exc)

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Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability involves an observable discrepancy in PerformanceAPIs in Google Chrome versions before 152.0.7977.65. A remote attacker could exploit this by creating a crafted HTML page to potentially access cross-origin data.

Impact Analysis

An attacker could exploit this to steal sensitive data from other websites you visit while using an affected Chrome version. This may include personal information, login credentials, or other confidential data.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles and HIPAA's security rules for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.65 or later to address the vulnerability.

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