CVE-2026-113054

Modified Modified - Updated After Analysis

Out-of-Bounds Read in Google Chrome SiteIsolation

Publication date: 2026-10-20

Last updated on: 2026-11-03

Assigner: Chrome

Description

Incorrect authorization in SiteIsolation in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-03

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-113054

EUVD

EUVD-2026-105606

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 156.0.8078.47 (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.
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out of bounds read issue in SiteIsolation in Google Chrome versions prior to 156.0.8078.47. It allows a remote attacker to read memory inside the sandbox by tricking a user into visiting a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 156.0.8078.47. To detect it, check your Chrome version by running chrome --version in the terminal. If the version is below 156.0.8078.47, the system is vulnerable.

Impact Analysis

An attacker could exploit this to access sensitive data in memory, potentially stealing information like passwords, cookies, or other private data processed by the browser.

Compliance Impact

This vulnerability involves an out of bounds read in SiteIsolation in Google Chrome, which could allow a remote attacker to read memory inside the sandbox via a crafted HTML page. While the description does not explicitly link this to compliance standards like GDPR or HIPAA, such vulnerabilities may pose risks to data confidentiality and integrity, potentially impacting compliance with these regulations if sensitive data is exposed.

Mitigation Strategies

Update Google Chrome to version 156.0.8078.47 or later to address the out of bounds read vulnerability in SiteIsolation.

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