How do I check whether I am affected by CVE-2026-113042?

Open chrome://settings/help and read the version; you are exposed if it is below 156.0.8078.47.

What is the fix for CVE-2026-113042?

Update Google Chrome to 156.0.8078.47 or later.

Who is not affected by CVE-2026-113042?

Not affected if: already-on-156.0.8078.47-or-later.

Live › vulnerability › CVE-2026-113042

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high8.8Other

Chrome: extension use-after-free lets a crafted web page run code

A use-after-free bug in Chrome's Extensions component lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to open a crafted HTML page.

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

8.8

high

scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

known so far4 of 6

missing: primary source, exploitation

First public: Oct 20, 2026 UTC
Last modified: Oct 22, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.

Why it is high, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: No.
Needs a special setup: No.
Reachable from: internet.
Worst case: Attacker runs code inside the browser sandbox after a visit.
CVSS said: 8.8. The facts above say critical; we keep the sources' high until an analyst looks.

Who is affected

1 product

Know the next one before it finds you.

Add to Slack

Live › vulnerability › CVE-2026-113042

Go to dashboard

high8.8Other

Chrome: extension use-after-free lets a crafted web page run code

A use-after-free bug in Chrome's Extensions component lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to open a crafted HTML page.

Summary written from the sources below. Check the originals before acting.

CVSS 3.x

8.8

high

scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

known so far4 of 6

missing: primary source, exploitation

First public: Oct 20, 2026 UTC
Last modified: Oct 22, 2026
Status: open
Known exploitation: None reported
Public exploit: None on GitHub
EPSS: not scored

First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.

Why it is high, and not just CVSS

Likelihood → · Impact ↓

critical

high

medium

high

medium

low

medium

low

Exploited: No reports yet.
Needs login: No.
Needs a special setup: No.
Reachable from: internet.
Worst case: Attacker runs code inside the browser sandbox after a visit.
CVSS said: 8.8. The facts above say critical; we keep the sources' high until an analyst looks.

Who is affected

1 product

Know the next one before it finds you.

Add to Slack

Chrome: extension use-after-free lets a crafted web page run code

Why it is high, and not just CVSS

Who is affected

Know the next one before it finds you.

Chrome: extension use-after-free lets a crafted web page run code

Why it is high, and not just CVSS

Who is affected

Know the next one before it finds you.

How to check

The fix

Who had it, and when

What the sources say, verbatim

Sources