CVE-2026-79255 Security feature bypass in Chrome

Low 3.1 Published Updated

A remote attacker with compromised renderer access can bypass web origin policy in Google Chrome via a crafted HTML page.

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-2026-79255?

CVE-2026-79255 is a low-severity vulnerability in Google Chrome, published on 25 Aug 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

Improper input validation in WebRTC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

Weakness: CWE-20

Which versions are affected by CVE-2026-79255?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-79255?

Upgrade to a fixed version.

Is CVE-2026-79255 being exploited?

There is no known exploitation of CVE-2026-79255 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-79255, ECHO-439c-3e45-c845, GHSA-rq7c-jjwm-j9pm, MINI-4v3r-vvp2-p4xx.

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