CVE-2026-17959 Information disclosure in Chrome

Medium 4.3 Published Updated

Remote attackers can leak cross-origin data via crafted HTML pages in Google Chrome, requiring users to upgrade to the latest version.

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-2026-17959?

CVE-2026-17959 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

Inappropriate implementation in Network in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)

Weakness: CWE-346

Which versions are affected by CVE-2026-17959?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-17959?

Upgrade to a fixed version.

Is CVE-2026-17959 being exploited?

There is no known exploitation of CVE-2026-17959 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-17959, ECHO-1858-46d0-429e, GHSA-crwh-8xq9-3q5q, MINI-94gm-gm8v-j39f.

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