CVE-2026-13838 Security feature bypass in Chrome

Medium 6.5 Published Updated

Remote attackers can bypass same-origin policy in Google Chrome via crafted HTML pages, 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-2026-13838?

CVE-2026-13838 is a medium-severity vulnerability in Google Chrome, published on 30 Jun 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 CSS in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: High)

Weakness: CWE-346

Which versions are affected by CVE-2026-13838?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-13838?

Upgrade to a fixed version.

Is CVE-2026-13838 being exploited?

There is no known exploitation of CVE-2026-13838 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-13838, ECHO-1ada-52a9-2e60, GHSA-cwc7-h32g-jv39, MINI-2pqj-4mvh-phvv.

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