CVE-2026-91725

Received Received - Intake

Observable CSS Discrepancy in Google Chrome

Publication date: 2026-09-15

Last updated on: 2026-09-16

Assigner: Chrome

Description

Observable discrepancy in CSS in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-15

Last Modified

2026-09-16

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-91725

EUVD

EUVD-2026-79989

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.47 (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 CSS in Google Chrome versions prior to 153.0.8010.47. A remote attacker could exploit this by creating a crafted HTML page to leak sensitive information.

Impact Analysis

An attacker could use this flaw to access sensitive data, such as user credentials or personal information, by observing differences in how CSS is rendered. This could lead to privacy breaches or unauthorized data access.

Compliance Impact

This vulnerability could result in unauthorized data exposure, violating GDPR's data protection principles or HIPAA's safeguards for protected health information. Organizations using affected Chrome versions may face compliance risks and penalties.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.47 or later to address the vulnerability.

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