CVE-2026-84331

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome Prior to 152.0.7977.75

Publication date: 2026-09-02

Last updated on: 2026-09-03

Assigner: Chrome

Description

Incorrect authorization in Actor in Google Chrome prior to 152.0.7977.75 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-02

Last Modified

2026-09-03

Generated

2026-09-22

AI Q&A

2026-09-02

EPSS Evaluated

2026-09-20

NVD

CVE-2026-84331

EUVD

EUVD-2026-69753

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 152.0.7977.75 (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 Google Chrome before version 152.0.7977.75. A remote attacker who already compromised the renderer process could bypass web origin policy by tricking a user into visiting a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome and involves incorrect authorization in the renderer process. Detection would require checking the Chrome version and monitoring for suspicious renderer process activity. No direct commands are provided in the context to detect this issue.

Impact Analysis

If exploited, this flaw could allow an attacker to access data or perform actions on websites as if they were the legitimate user. This might lead to theft of sensitive information or unauthorized actions on behalf of the user.

Compliance Impact

This vulnerability allows a remote attacker to bypass web origin policy, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data privacy) by increasing the risk of data breaches or unauthorized data exposure.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.75 or later to address the incorrect authorization vulnerability.

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