CVE-2026-87658 Information disclosure in Chrome

Medium 4.3 Published Updated

A remote attacker can obtain cross-origin data via a crafted Chrome extension, requiring social engineering to exploit this information leak.

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-2026-87658?

CVE-2026-87658 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

Information leak in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)

Weakness: CWE-200

Which versions are affected by CVE-2026-87658?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-87658?

Upgrade to a fixed version.

Is CVE-2026-87658 being exploited?

There is no known exploitation of CVE-2026-87658 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-87658, ECHO-8abf-1161-a88c, GHSA-rqr3-v6x2-j8pq, MINI-wp6h-m5w2-v85v.

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