Information disclosure in Extension.vn 2fa Authenticator Extension
CVE-2026-82810
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (3.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 3.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Extension.vn 2fa Authenticator Extension — versions 1.0.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/397229 (technical-description, vdb-entry)
- vuldb.com/vuln/397229/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82810 (third-party-advisory)
- vuldb.com/submit/875249 (third-party-advisory)
- github.com/xryj920/chrome_extensions/blob/main/extension.vn 2FA Authenticator 1… (exploit)
Frequently asked questions
- What is CVE-2026-82810?
- CVE-2026-82810 is a low-severity vulnerability in Extension.vn 2fa Authenticator Extension, classified under Information Disclosure. CVSS score: 3.3/10. Published 2026-08-31.
- How severe is CVE-2026-82810?
- Low severity. CVSS v3 base score is 3.3 out of 10.