CVE-2026-4680

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-24 · updated 2026-06-17
Weakness: CWE-416

Description

Use after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Affected products

Google Chrome: before 146.0.7680.164 — fixed in 146.0.7680.164

How to fix

Upgrade to a fixed version: Google Chrome 146.0.7680.164. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_23.html
https://issues.chromium.org/issues/491869946

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