CVE-2026-17787 Security feature bypass in Chrome

Medium 6.5 Published Updated

A remote attacker can bypass same-origin policy in Google Chrome DevTools via a crafted HTML page, requiring users to update the browser.

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-2026-17787?

CVE-2026-17787 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 DevTools 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: Medium)

Weakness: CWE-346

Which versions are affected by CVE-2026-17787?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-17787?

Upgrade to a fixed version.

Is CVE-2026-17787 being exploited?

There is no known exploitation of CVE-2026-17787 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-17787, ECHO-1a66-0f57-8af3, GHSA-765r-wfrw-h7w2, MINI-636f-5f7j-87m3.

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