CVE-2026-17851 Information disclosure in Chrome

Medium 4.3 Published Updated

A remote attacker with compromised renderer access can leak cross-origin data via a crafted HTML page due to side-channel leakage in Autofill.

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-2026-17851?

CVE-2026-17851 is a medium-severity vulnerability in Google Chrome, published on 30 Jul 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

Side-channel information leakage in Autofill in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Weakness: CWE-1300

Which versions are affected by CVE-2026-17851?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-17851?

Upgrade to a fixed version.

Is CVE-2026-17851 being exploited?

There is no known exploitation of CVE-2026-17851 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-17851, ECHO-951a-8151-48ff, GHSA-gvh4-9j76-m35h, MINI-hh9r-mj8m-pv3r.

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