CVE-2026-8004 Information disclosure in Chrome

Medium 4.3 Published Updated

A malicious Chrome extension can leak cross-origin data due to insufficient policy enforcement in DevTools, requiring user installation of the extension.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-8004?

CVE-2026-8004 is a medium-severity vulnerability in Google Chrome, published on 6 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Insufficient policy enforcement in DevTools in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Low)

Weakness: CWE-693

Which versions are affected by CVE-2026-8004?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-8004?

Upgrade to a fixed version.

Is CVE-2026-8004 being exploited?

There is no known exploitation of CVE-2026-8004 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-8004, ECHO-9501-5174-7572, GHSA-68xh-x3xv-j37f, MINI-7559-889p-j399.

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