CVE-2025-6556 Security feature bypass in Chrome
Remote attackers can bypass Content Security Policy in Google Chrome via crafted HTML pages, 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-2025-6556?
CVE-2025-6556 is a medium-severity vulnerability in Google Chrome, published on 24 Jun 2025. 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 policy enforcement in Loader in Google Chrome prior to 138.0.7204.49 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)
Weakness: CWE-288
Which versions are affected by CVE-2025-6556?
It affects 1 product.
Products include Google Chrome.
How do I fix CVE-2025-6556?
Upgrade to a fixed version.
Is CVE-2025-6556 being exploited?
There is no known exploitation of CVE-2025-6556 in the wild and no public exploit code.
Other vulnerabilities in Google Chrome
Sources
Also known as DEBIAN-CVE-2025-6556, GHSA-96h5-q657-fqcv.