CVE-2026-82810: extension.vn 2FA Authenticator Extension Background Service Worker chrome.runtime.onMessageExternal.addListener information disclosure
A weakness has been identified in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome. The impacted element is the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. Executing a manipulation of the argument sender.id can lead to information disclosure. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs local access and low-level privileges. The issue affects the extension's Background Service Worker message handler.
What does an attacker need to manipulate?
Exploitation involves manipulating the sender.id argument supplied to chrome.runtime.onMessageExternal.addListener. No user interaction is required according to the supplied severity vector.
Is public exploit information available?
Yes. The exploit has been made public and could be used in attacks.