CVE-2026-87453 Information disclosure in Chrome

Medium 5.3 Published Updated

A confused deputy flaw in Chrome's BackgroundFetch allows a compromised renderer to leak sensitive information via a crafted HTML page.

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-2026-87453?

CVE-2026-87453 is a medium-severity vulnerability in Google Chrome, published on 9 Sep 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

Confused deputy in BackgroundFetch in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)

Weakness: CWE-441

Which versions are affected by CVE-2026-87453?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-87453?

Upgrade to a fixed version.

Is CVE-2026-87453 being exploited?

There is no known exploitation of CVE-2026-87453 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-87453, ECHO-ee42-6e8f-4c46, GHSA-vq9g-7664-c37x, MINI-jg3j-pgwv-wj45.

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