What is GHSA-2f45-6797-cj93?

GHSA-2f45-6797-cj93 is a security advisory published by GitHub Security Advisories with Medium severity. Improper verification of the source of a communication channel vulnerability in Opera Neon on...

Which CVE IDs does GHSA-2f45-6797-cj93 cover?

GHSA-2f45-6797-cj93 covers the following CVE IDs: CVE-2026-123139. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-2f45-6797-cj93Medium

Improper verification of the source of a communication channel vulnerability in Opera Neon on...

Vendor

GitHub Security Advisories

Published

November 12, 2026

Last Modified

November 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-123139 →

📋 Description

Improper verification of the source of a communication channel vulnerability in Opera Neon on macOS and Windows allows a malicious browser extension to take control of the browser by sending commands through MCP Hub to the built-in Browser Operator extension. This issue affects Opera Neon MCP Hub extension: 0.0.1.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-123139
https://security.opera.com/en/improper-verification-of-source-of-a-communication-channel-opera-security-advisories
https://github.com/advisories/GHSA-2f45-6797-cj93