CVE-2026-82810
extension.vn 2FA Authenticator Extension Background Service Worker chrome.runtime.onMessageExternal.addListener information disclosure
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 CWE-284 |
| Vendor | extension.vn |
| Product | 2fa authenticator extension |
| Published | Aug 31, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
extension.vn / 2FA Authenticator Extension
1.0.0.2
References
vuldb.com: https://vuldb.com/vuln/397229 vuldb.com: https://vuldb.com/vuln/397229/cti vuldb.com: https://vuldb.com/cve/CVE-2026-82810 vuldb.com: https://vuldb.com/submit/875249 github.com: https://github.com/xryj920/chrome_extensions/blob/main/extension.vn%202FA%20Authenticator%201.0.0.2%20exposes%20stored%20TOTP%20secrets%20through%20an%20unrestricted%20external%20message%20handler
Credits
🔍 DRXYJ (VulDB User) VulDB CNA Team