Claude Desktop Extensions — Cyber Threats, Attacks & Incidents

Related Threat Clusters

• Zenity Labs Reveals PleaseFix Vulnerabilities in Perplexity Comet and Other Browsers

  Zenity Labs disclosed a family of critical vulnerabilities known as PleaseFix, affecting agentic browsers including Perplexity Comet. These vulnerabilities enable zero-click agent hijacking, local file exfiltration, and…

  18 articles · Updated March 3, 2026
• Zero-Click RCE Vulnerability Discovered in Claude Desktop Extensions

  A zero-click remote code execution (RCE) vulnerability has been identified in Claude Desktop Extensions, allowing attackers to compromise systems through a single Google Calendar event. This flaw affects over 10,000…

  23 articles · Updated February 9, 2026

Recent Intelligence Reports

• Until last month, attackers could've stolen info from Perplexity Comet users just by sending a calendar invite — Theregister · March 3, 2026
• Claude Desktop Extensions Zero-Click RCE Flaw Exposes Over 10,000 Users to Silent Attacks — Cyberpress · February 10, 2026
• 0-Click RCE Found in Claude Desktop Extensions, Putting 10,000+ Users at Risk — Gbhackers · February 10, 2026
• Claude Desktop Extensions Exposes Over 10,000 Users to Remote Code Execution Vulnerability — X · February 10, 2026
• New Zero-Click Flaw in Claude Desktop Extensions, Anthropic Declines Fix — Infosecurity-Magazine · February 9, 2026
• Claude Desktop Extensions Exposes Over 10000 Users to Remote Code Execution Vulnerability — Layerxsecurity · February 9, 2026

Related Entities