Integer Overflow in Google Chrome Extensions API

Publication date: 2026-07-08

Last updated on: 2026-07-08

Assigner: Chrome

Description

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)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-08

Last Modified

2026-07-08

Generated

2026-07-09

AI Q&A

2026-07-09

EPSS Evaluated

N/A

NVD

CVE-2026-15108

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	150.0.7871.115

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This vulnerability is an integer overflow in the Extensions API of Google Chrome versions prior to 150.0.7871.115. It allows an attacker who convinces a user to install a malicious Chrome extension to perform an out of bounds memory read by using a specially crafted extension.

Impact Analysis

The impact of this vulnerability is that an attacker could read memory outside the intended boundaries, potentially exposing sensitive information or causing unexpected behavior in the browser. This could compromise user data or system security if a malicious extension is installed.

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