CVE-2026-113042: Incorrect authorization in Extensions

Q: Who is exposed to this vulnerability?

Users of Google Chrome versions earlier than 156.0.8078.47 are affected. Exploitation occurs through a crafted HTML page and results in code execution inside the browser sandbox.

Q: What does an attacker need to exploit it?

The attacker needs to induce the target to process a crafted HTML page remotely. The provided information does not state that any additional permissions, extension installation, or local access are required.

Q: What should organizations do to remediate the issue?

Update Google Chrome to version 156.0.8078.47 or later. The provided information does not specify an alternative mitigation for systems that cannot be updated immediately.

Published May 28, 2026

Updated

Chromium CVE-2026-113042: Use after free

Other sources

Incorrect authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted Chrome extension. (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 Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside 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 28, 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·10:18 PM

DescriptionSeverityWeaknessAffected Software

Data Sourced

via OSV·10:18 PM

DescriptionSeverityAffected Software

Oct 23, 2026

Data Sourced

via Microsoft·02:32 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 affected. Exploitation occurs through a crafted HTML page and results in code execution inside the browser sandbox.

What does an attacker need to exploit it?

The attacker needs to induce the target to process a crafted HTML page remotely. The provided information does not state that any additional permissions, extension installation, or local access are required.

What should organizations do to remediate the issue?

Update Google Chrome to version 156.0.8078.47 or later. The provided information does not specify an alternative mitigation for systems that cannot be updated immediately.

CVE-2026-113042: Incorrect authorization in Extensions

Other sources

Credit

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Who is exposed to this vulnerability?

What does an attacker need to exploit it?

What should organizations do to remediate the issue?

Company

Resources

Contact