extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome Background Service Worker chrome.runtime.onMessageExternal.addListener sender.id information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.0$0-$5k1.83+

Summaryinfo

A vulnerability was found in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome. It has been rated as problematic. This affects the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. The manipulation of the argument sender.id leads to information disclosure. This vulnerability is traded as CVE-2026-82810. An attack has to be approached locally. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability was found in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome and classified as problematic. This issue affects the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. The manipulation of the argument sender.id with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-82810. The exploitation is known to be easy. An attack has to be approached locally. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/31/2026 Advisory disclosed
08/31/2026 +0 days VulDB entry created
08/31/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-82810 (🔒)
GCVE (CVE): GCVE-0-2026-82810
GCVE (VulDB): GCVE-100-397229
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/31/2026 07:08
Changes: 08/31/2026 07:08 (58)
Complete: 🔍
Submitter: DRXYJ
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #875249: extension.vn 2FA Authenticator Chrome extension 1.0.0.2 Information Disclosure (by DRXYJ)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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