CVE-2026-87540

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome UI Spoofing Vulnerability

Publication date: 2026-09-09

Last updated on: 2026-09-10

Assigner: Chrome

Description

Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-09

Last Modified

2026-09-10

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87540

EUVD

EUVD-2026-74390

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability involves incorrect authorization in Isolated mode within Google Chrome versions before 153.0.8010.36. A remote attacker could exploit this by creating a specially crafted HTML page to trick users into seeing fake UI elements, potentially leading to phishing or other deceptive attacks.

Detection Guidance

This vulnerability involves incorrect authorization in Google Chrome, allowing UI spoofing via crafted HTML. Detection primarily requires checking Chrome version and monitoring for suspicious UI behavior. Update Chrome to version 153.0.8010.36 or later to mitigate the issue.

Impact Analysis

This vulnerability could allow attackers to deceive users by displaying fake UI elements, such as misleading dialog boxes or browser warnings. Users might unknowingly interact with these spoofed elements, leading to actions like entering sensitive information or downloading malicious content.

Compliance Impact

This vulnerability involves incorrect authorization leading to UI spoofing, which could potentially allow attackers to deceive users into disclosing sensitive information. This may impact compliance with GDPR by increasing the risk of unauthorized data exposure and HIPAA by compromising user trust in secure interfaces for protected health information.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the incorrect authorization issue that allows UI spoofing.

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