CVE-2026-113189: Improper input validation in Core

Q: Who is exposed to this vulnerability?

Users of Google Chrome versions earlier than 156.0.8078.47 are exposed when they load a crafted HTML page. The issue can be exploited remotely.

Q: What level of access does an attacker need?

The attacker does not need local access according to the available information. Exploitation is triggered through a crafted HTML page and may allow arbitrary code execution outside Chrome's sandbox.

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

Check the installed Google Chrome version. Versions prior to 156.0.8078.47 are affected; version 156.0.8078.47 or later is not identified as affected by the provided data.

Published May 17, 2026

Updated

Chromium CVE-2026-113189: Use after free

Other sources

Improper input validation in Core in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the renderer process to spoof UI elements via a crafted HTML page. (Chromium security severity: Medium)

— 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

Use after free in Core in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

— MITRE

Credit

Google

Affected Software

8 affected componentsFixes available

Microsoft Edge (Chromium-based)<156.0.4314.42

156.0.4314.42

Microsoft Edge<156.0.4314.42

156.0.4314.42

Google Chrome<156.0.8078.47

156.0.8078.47

Google Chrome<156.0.8078.47

debian/chromium<156.0.8078.47-1~deb12u1

156.0.8078.47-1~deb12u1

debian/chromium<156.0.8078.47-1~deb13u1

156.0.8078.47-1~deb13u1

debian/chromium<156.0.8078.47-1

156.0.8078.47-1

debian/chromium<=150.0.7871.100-1~deb12u1, <=150.0.7871.181-1~deb13u1

156.0.8078.79-1~deb12u1156.0.8078.79-1~deb13u1156.0.8078.79-1

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 156.0.4314.42
Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 156.0.8078.47
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1~deb12u1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1~deb13u1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.79-1~deb12u1Fixed in 156.0.8078.79-1~deb13u1Fixed in 156.0.8078.79-1
Upgrade
Upgrade Google Chrome to a version that resolves this vulnerability.
Fixed in 156.0.8078.47

Event History

May 17, 2026

CVE Published

12:00 AM

Data Sourced

12:00 AM

SeverityWeaknessAffected Software

Oct 20, 2026

CVE Published

via MITRE·09:02 PM

Data Sourced

via MITRE·09:02 PM

DescriptionWeakness

Data Sourced

via NVD·10:19 PM

DescriptionSeverityWeaknessAffected Software

Data Sourced

via OSV·10:19 PM

DescriptionSeverityAffected Software

Oct 23, 2026

Data Sourced

via Microsoft·02:40 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

Who is exposed to this vulnerability?

Users of Google Chrome versions earlier than 156.0.8078.47 are exposed when they load a crafted HTML page. The issue can be exploited remotely.

What level of access does an attacker need?

The attacker does not need local access according to the available information. Exploitation is triggered through a crafted HTML page and may allow arbitrary code execution outside Chrome's sandbox.

How can I determine whether a system is affected?

Check the installed Google Chrome version. Versions prior to 156.0.8078.47 are affected; version 156.0.8078.47 or later is not identified as affected by the provided data.

CVE-2026-113189: Improper input validation in Core

Other sources

Credit

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Who is exposed to this vulnerability?

What level of access does an attacker need?

How can I determine whether a system is affected?

Company

Resources

Contact