Information disclosure in extension.vn 2FA Authenticator Extension
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-284.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| extension.vn | 2FA Authenticator Extension | 1.0.0.2 | — | No fix listed | CNA |
- 2FA Authenticator Extension Vendorextension.vn Affected 1.0.0.2 Fixed in — No fix listed CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:extension.vn:2fa_authenticator_extension:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:extension.vn:2fa_authenticator_extension:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-82810
- 2026-10-03 Alias added: GHSA-7rrg-c5fp-7863
Sources
- CVE-2026-82810 · CVE Program
- CVE-2026-82810 · NVD
- FIRST EPSS
- GHSA-7rrg-c5fp-7863 · GitHub Advisory Database · CC BY 4.0
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