CVE-2026-17943 Security feature bypass in Chrome

Medium 4.3 Published Updated

A remote attacker can bypass Content Security Policy in Google Chrome via a crafted HTML page due to an inappropriate parser implementation.

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-2026-17943?

CVE-2026-17943 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 Parser in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)

Weakness: CWE-693

Which versions are affected by CVE-2026-17943?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-17943?

Upgrade to a fixed version.

Is CVE-2026-17943 being exploited?

There is no known exploitation of CVE-2026-17943 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-17943, ECHO-8406-6a09-d1a2, GHSA-g85x-23c8-c98w, MINI-4grm-q9c5-x8h5.

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