vulnerability Anthropic Silently Patches Claude Code Sandbox Bypass Anthropic has addressed a vulnerability in its Claude Code network sandbox that could have allowed attackers to bypass security controls and potentially exfiltrate data. The vulnerability, discovered by researcher Aonan Guan, stemmed from misinterpretations of outbound traffic filtering and a SOCKS5 hostname null-byte… SecurityWeek · May 20, 2026 High CVE-2025-66479sandboxprompt injectionsecurity