threat-intel Claude Flaw Automatically Sends Malicious Prompts to AI Agents A vulnerability, dubbed ‘PromptFiction,’ has been discovered in Anthropic’s Claude Desktop application, allowing attackers to automatically submit malicious prompts to the AI assistant with a single click, bypassing the need for user interaction. This flaw, combined with a previous vulnerability (‘Claudy Day’), could l… Dark Reading · Jul 15, 2026 High prompt-injectionai-securityuri-scheme