CVE-2026-12456
Medium
Description
Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)
SeverityMedium
CVSS4.2
Exploit probability—
Product
Google Chrome
PublishedJun 17, 2026
First seenJun 17, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- google chrome149.0.7827.155 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| google chrome | v < 149.0.7827.155 | 149.0.7827.155 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.