CVE-2025-9866

Published: Sep 3, 2025Modified: Sep 4, 2025

8.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 2.8 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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)

Affected (1)

Products: Google: Chrome

Google

1 product

Chrome

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Google Chrome	Before 140.0.7339.80

Related CWEs

CWE-693

Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

References (2)

https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html

Source: chrome-cve-admin@google.com

Release Notes

https://issues.chromium.org/issues/379337758

Source: chrome-cve-admin@google.com

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Timeline

No history available yet.