CVE-2026-15108: High Integer overflow in Extensions API

Published Jul 8, 2026
·
Updated

Chromium: CVE-2026-15108 Integer overflow in Extensions API

Other sources

Integer overflow in Extensions API in Google Chrome prior to 150.0.7871.115 allowed an attacker who convinced a user to install a malicious extension to perform an out of bounds memory read via a crafted Chrome Extension. (Chromium security severity: High)

NVD

This CVE was assigned by Chrome.  Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

Microsoft

Affected Software

3 affected componentsFixes available
Google Chrome<150.0.7871.115
Microsoft Edge<150.0.4078.65
Microsoft Edge (Chromium-based)<150.0.4078.65
150.0.4078.65

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 150.0.4078.65
  2. Upgrade

    Upgrade Google Chrome / Chromium-based browsers to a version that resolves this vulnerability.

    Fixed in 150.0.7871.115

Event History

Jul 8, 2026
CVE Published
via MITRE·10:35 PM
Data Sourced
via MITRE·10:35 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
Jul 28, 2026
Data Sourced
via Microsoft·10:03 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·10:03 PM
DescriptionAffected Software
Aug 10, 2026
Data Sourced
12:00 AM
SeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-15108?

The severity of CVE-2026-15108 is medium, with a score of 4.3 based on the CVSS v3.1.

2

How do I fix CVE-2026-15108?

To fix CVE-2026-15108, update Google Chrome to version 150.0.7871.115 or later.

3

What vulnerabilities are related to CVE-2026-15108?

CVE-2026-15108 is related to integer overflow vulnerabilities in browser extensions installed in Google Chrome.

4

What are the potential impacts of CVE-2026-15108?

CVE-2026-15108 could allow an attacker to perform out of bounds memory reads if a malicious extension is installed by the user.

5

Who is affected by CVE-2026-15108?

Users of Google Chrome versions prior to 150.0.7871.115 are at risk of CVE-2026-15108.

Contact

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