Description

Inappropriate implementation in Extensions in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)

INFO

Published Date :

2025-09-03T16:17:48.331Z

Last Modified :

2026-02-26T17:49:45.418Z

Source :

Chrome
AFFECTED PRODUCTS

The following products are affected by CVE-2025-9866 vulnerability.

Vendors Products
Google
  • Chrome
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-9866.

URL Resource
https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html cve-icon cve-icon
https://issues.chromium.org/issues/379337758 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact