CVE-2026-123139

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...

CVE-2026-123139

The Opera Neon browser on macOS and Windows is affected by an improper verification of the source of a communication channel vulnerability. This flaw allows a malicious browser extension to take control of the browser by sending commands through MCP Hub to the built-in Browser Operator extension....

CVE-2026-123139

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...

EUVD-2026-124370

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...

Improper verification of source of a communication channel – Opera Security Advisories

: 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 H...

Update your browser: Security fix for Chrome zero-day CVE-2026-2441

News, Security Update your browser: Security fix for Chrome zero-day CVE-2026-2441 Share February 16th, 2026 Hi everyone! The latest patches to Opera, Opera GX, Opera Air, Opera Neon, and Opera for Android address several recent vulnerabilities, including a zero-day exploit CVE-2026-2441. We...

Update your browser: Security fix for Chrome zero-day CVE-2025-14174

News, Security Update your browser: Security fix for Chrome zero-day CVE-2025-14174 Share December 18th, 2025 Hi everyone! The latest patches to Opera, Opera GX, Opera Air, and Opera for Android address several recent vulnerabilities, including a zero-day exploit CVE-2025-14174. We recommend...

Update your browser: Security fix for Chrome zero-day CVE-2025-13223

News, Security Update your browser: Security fix for Chrome zero-day CVE-2025-13223 Share November 20th, 2025 Hi everyone! The latest patches to Opera, Opera GX, Opera Air, and Opera for Android address several recent vulnerabilities, including a zero-day exploit CVE-2025-13223. We recommend...

Prompt injection in Opera Neon: Rapid response through responsible disclosure

Security Prompt injection in Opera Neon: Rapid response through responsible disclosure Share October 23rd, 2025 Hi Opera users, This week, we were able to address a real-world security scenario on Opera Neon thanks to the work of a security researcher team. The researchers reached out to us throu...

Protected with Opera Neon: Understanding agentic browser security

Security Protected with Opera Neon: Understanding agentic browser security Share October 21st, 2025 Hi Opera users, If you were hanging out around these parts in the past few weeks, you might have noticed that we launched Opera Neon – an AI agentic browser that can browse with you or for you, tak...