CVE-2026-103621: Integer overflow in Compositing

Q: Who is exposed to this issue?

Users of Google Chrome versions earlier than 154.0.8037.97 are exposed when they visit a malicious or crafted HTML page.

Q: What must an attacker do to exploit the vulnerability?

The attacker needs to induce the target to load a crafted HTML page remotely. The reported impact is leakage of cross-origin data.

Q: How can I determine whether a system is affected?

Check the installed Google Chrome version. Versions prior to 154.0.8037.97 are affected according to the available information.

Published Sep 2, 2026

Updated

Integer overflow in Compositing in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Credit

Google

Affected Software

2 affected componentsFixes available

Google Chrome<154.0.8037.97

154.0.8037.97

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 154.0.8037.97

Event History

Sep 2, 2026

CVE Published

12:00 AM

Data Sourced

12:00 AM

SeverityWeaknessAffected Software

Oct 2, 2026

CVE Published

via MITRE·04:07 PM

Data Sourced

via MITRE·04:07 PM

DescriptionWeakness

Data Sourced

via NVD·04:16 PM

DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

6766445691312943866

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

Who is exposed to this issue?

Users of Google Chrome versions earlier than 154.0.8037.97 are exposed when they visit a malicious or crafted HTML page.

What must an attacker do to exploit the vulnerability?

The attacker needs to induce the target to load a crafted HTML page remotely. The reported impact is leakage of cross-origin data.

How can I determine whether a system is affected?

Check the installed Google Chrome version. Versions prior to 154.0.8037.97 are affected according to the available information.

CVE-2026-103621: Integer overflow in Compositing

Credit

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Who is exposed to this issue?

What must an attacker do to exploit the vulnerability?

How can I determine whether a system is affected?

Company

Resources

Contact

Frequently Asked Questions

Who is exposed to this issue?

What must an attacker do to exploit the vulnerability?

How can I determine whether a system is affected?