CVE-2026-17982 Security feature bypass in Chrome

Medium 4.3 Published Updated

A remote attacker can bypass same-origin policy in Google Chrome via a crafted HTML page due to insufficient input validation in Cast.

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-2026-17982?

CVE-2026-17982 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

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Low)

Weakness: CWE-20

Which versions are affected by CVE-2026-17982?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-17982?

Upgrade to a fixed version.

Is CVE-2026-17982 being exploited?

There is no known exploitation of CVE-2026-17982 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-17982, ECHO-1b80-316a-b9d6, GHSA-9xf4-fpqh-x43r, MINI-mhwp-66jj-5465.

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